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Debate sparked over list of top 100 cities on the planet

<p>The best 100 cities on the planet have been revealed, with one New Zealand city making the final list. </p> <p>The list was compiled by as part of an annual report by <a href="https://www.worldsbestcities.com" target="_blank" rel="noopener">Resonance Consultancy</a>, who rated major capital cities on three main factors: liveability, lovability and prosperity, with dozens of factors taken into account.</p> <p>These include educational attainment, GDP per capita, poverty rate, the number of quality restaurants, shops and nightclubs, walkability, the number of mapped bike routes, quality parks and museums, as well as ratings from TripAdvisor and Google. </p> <p>The top ten chart features four cities on the Asian continent, four in Europe and two in the U.S, while Auckland was also featured in the list, coming in at number 64.</p> <p>Taking out the number one spot this year is London, dubbed the "capital of capitals" that "reigns over all global cities" as the best metropolis in the world. </p> <p>The study proclaims it as the most liveable and the most lovable mecca, solidified by its winning culture and education attainment.</p> <p>The report concludes, "Despite crippling Covid lockdowns and economic devastation. Despite Brexit. Despite a war in Europe. The city is more indomitable and part of the global discourse than ever. From the Queen's death, to last autumn's chaotic drama at 10 Downing Street that finally calmed down with Rishi Sunak becoming prime minister, only to take heavy local election losses this spring, London is rarely quiet these days."</p> <p>Here's the full list of top 100 cities in the world.</p> <p> 1 - London, England </p> <p>2 - Paris, France</p> <p>3 - New York, USA</p> <p>4 - Tokyo, Japan</p> <p>5 - Singapore</p> <p>6 - Dubai, United Arab Emirates</p> <p>7 - San Francisco, USA</p> <p>8 - Barcelona, Spain</p> <p>9 - Amsterdam, Netherlands</p> <p>10 - Seoul, South Korea</p> <p>11 - Rome, Italy </p> <p>12 - Prague, Czechia </p> <p>13 - Madrid, Spain </p> <p>14 - Berlin, Germany</p> <p>15 - Los Angeles, USA</p> <p>16 - Chicago, USA</p> <p>17 - Washington, D.C., USA</p> <p>18 - Beijing, China </p> <p>19 - Istanbul, Turkey </p> <p>20 - Dublin, Ireland</p> <p>21 - Vienna, Austria </p> <p>22 - Milan, Italy </p> <p>23 - Toronto, Canada</p> <p>24 - Boston, USA</p> <p>25 - Abu Dhabi, United Arab Emirates </p> <p>26 - Budapest, Hungary </p> <p>27 - São Paulo, Brazil</p> <p>28 - Riyadh, Saudi Arabia</p> <p>29 - Stockholm, Sweden </p> <p>30 - Munich, Germany</p> <p>31 - Melbourne, Australia </p> <p>32 - Lisbon, Portugal </p> <p>33 - Zürich, Switzerland</p> <p>34 - Seattle, USA</p> <p>35 - Sydney, Australia </p> <p>36 - Doha, Qatar</p> <p>37 - Brussels, Belgium </p> <p>38 - San Jose, USA</p> <p>39 - Bangkok, Thailand</p> <p>40 - Warsaw, Poland </p> <p>41 - Copenhagen, Denmark </p> <p>42 - Taipei, Taiwan </p> <p>43 - Austin, USA</p> <p>44 - Oslo, Norway </p> <p>45 - Osaka, Japan </p> <p>46 - Hong Kong, China </p> <p>47 - Tel Aviv, Israel </p> <p>48 - Athens, Greece</p> <p>49 - Frankfurt, Germany</p> <p>50 - Vancouver, Canada </p> <p>51 - San Diego, USA</p> <p>52 - Orlando, USA</p> <p>53 - Helsinki, Finland </p> <p>54 - Miami, USA</p> <p>55 - Buenos Aires, Argentina </p> <p>56 - Hamburg, Germany </p> <p>57 - Brisbane, Australia </p> <p>58 - Kuwait, Kuwait</p> <p>59 - Las Vegas, USA</p> <p>60 - Montreal, Canada </p> <p>61 - Glasgow, Scotland</p> <p>62 - Shanghai, China </p> <p>63 - Rio de Janeiro, USA</p> <p>64 - Auckland, New Zealand </p> <p>65 - Atlanta, USA</p> <p>66 - Houston, USA</p> <p>67 - Busan, South Korea</p> <p>68 - Philadelphia, USA</p> <p>69 - Naples, Italy </p> <p>70 - Denver, USA</p> <p>71 - Nashville, USA</p> <p>72 - Manchester, England </p> <p>73 - Dallas, USA</p> <p>74 - Liverpool, England</p> <p>75 - Minneapolis, USA</p> <p>76 - Mexico City, Mexico</p> <p>77 - Minsk, Belarus </p> <p>78 - Lyon, France </p> <p>79 - Portland, USA</p> <p>80 - Rotterdam, Netherlands </p> <p>81 - Bogotá, Colombia</p> <p>82 - Kraków, Poland</p> <p>83 - Valencia, Spain</p> <p>84 - Santiago, Chile </p> <p>85 - Birmingham, England</p> <p>86 - New Orleans, USA</p> <p>87 - Bucharest, Romania</p> <p>88 - Leeds, England</p> <p>89 - Muscat, Oman </p> <p>90 - Ottawa, Canada </p> <p>91 - Cologne, Germany </p> <p>92 - Charlotte, USA</p> <p>93 - Calgary, Canada </p> <p>94 - Nagoya, Japan  </p> <p>95 - Düsseldorf, Germany </p> <p>96 - Hanoi, Vietnam</p> <p>97 - Gothenburg, Sweden </p> <p>98 - Sapporo, Japan</p> <p>99 - Bilbao, Spain </p> <p>100 - Baltimore, USA</p> <p><em>Image credits: Getty Images </em></p>

International Travel

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Handkerchief or tissue? Which one’s better for our health and the planet?

<p><em><a href="https://theconversation.com/profiles/mark-patrick-taylor-11394">Mark Patrick Taylor</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a> and <a href="https://theconversation.com/profiles/hester-joyce-122106">Hester Joyce</a>, <a href="https://theconversation.com/institutions/la-trobe-university-842">La Trobe University</a></em></p> <p>Maybe you have hay fever, COVID, a cold or the flu, and are reaching for a tissue or handkerchief.</p> <p>But which one’s better at stopping infections spreading? Which has a smaller environmental impact? Is it the hanky, which has been with us since at least Roman times? Or the more recent and widely-used paper tissue?</p> <p>You might be surprised at the results.</p> <h2>A short history of the handkerchief and tissue</h2> <p>Today, we think of hankies as something to wipe noses, and catch coughs and sneezes. But such a simple square of cloth has a complex history.</p> <p>In the first century, the Romans <a href="http://margaretroedesigns.com/wp-content/uploads/HandkerchiefHist.pdf">used</a> a <em>sudarium</em> (Latin for sweat cloth) to wipe off sweat, or to mask the mouth and face.</p> <p>Over time, people have used what we now call a handkerchief or hanky, as a head covering, as a veil and for disguise, to clean hands, for wounds and to staunch blood.</p> <p>Wealthy people have used them to signify class and manners, and for discretely wiping away phlegm rather than smearing snot on sleeves or down skirts. Royalty have used them to indicate wealth and power through their gifts of fine linen and silk handkerchiefs to favoured subjects. Henry VIII owned an extensive collection, some embossed with gold and silver.</p> <p>Handkerchiefs have also been <a href="https://www.bl.uk/collection-items/italian-handkerchief">markers of</a> love, fidelity and sexual preferences. In the late 19th century the “handkerchief code” was a system of colour coding and handkerchief placement used to indicate sexual preferences, <a href="https://www.refinery29.com/en-au/lgbtq-secret-handkerchief-code-language">which is still active</a> in LGBTQ+ communities today.</p> <p>We can <a href="https://www.euppublishing.com/doi/epub/10.3366/cult.2020.0214">trace the origins</a> of paper tissue to China in the 2nd century BC. But it wasn’t until the 1920s that tissue as we know it today <a href="https://www.kleenex.co.uk/kleenex-history">was developed</a> to remove make-up and wipe runny noses from hay fever.</p> <h2>So, which one is better for our health?</h2> <p>More than 100 years ago, a cloth hanky was considered a “<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5248216/pdf/hosplond73063-0008b.pdf">little flag of Death</a>” because of the germs it carried and how it contaminated pockets it was left in. Later, we were urged to use a hanky <a href="http://resource.nlm.nih.gov/101449736">as</a> “coughs and sneezes spread diseases”.</p> <figure class="align-right zoomable"><figcaption></figcaption></figure> <p>Today, we know nasal secretions harbour cold-type viruses that can be <a href="https://onlinelibrary.wiley.com/doi/10.1002/jmv.22027">transferred</a> to a <a href="https://www.abc.net.au/health/talkinghealth/factbuster/stories/2011/06/02/3231404.htm">range of surfaces</a> – hands, handkerchiefs, tissues, door knobs, keyboards – sometimes surviving <a href="https://doi.org/10.1093/oxfordjournals.aje.a113473">long after</a> the initial exposure.</p> <p>So blowing your nose into a reusable cotton hanky, then touching another object, means these viruses can spread. Even if you put your cotton hanky in the wash immediately, you’d likely contaminate surfaces on the way, such as doorknobs, and use your infected hands to operate the washing machine.</p> <p>Viruses don’t tend to <a href="https://doi.org/10.1093/infdis/146.1.47">survive so long</a> on tissues. As long as you throw tissues away after using them, and don’t leave them lying around for others to pick up, the chance of passing germs to others from a used tissue is far lower.</p> <p>Then there’s the question of whether hankies or tissues are effective barriers to coughing and respiratory spray.</p> <p>Basic cloth coverings, such as handkerchiefs or bandannas, can catch sputum, as can tissues. But several studies have shown they do not effectively <a href="https://doi.org/10.1021/acs.nanolett.0c02211">filter</a> <a href="https://aaqr.org/articles/aaqr-13-06-oa-0201.pdf">respiratory aerosols</a>, or <a href="https://doi.org/10.1177/153567601001500204">stop you inhaling</a> pollutants, pathogens or <a href="https://doi.org/10.1016/j.ijheh.2018.03.012">small airborne particles</a>.</p> <h2>Which one is better for the planet?</h2> <p>If you want to look at environmental considerations, US company Ecosystem Analytics <a href="https://ecosystem-analytics.com/wp-content/uploads/2013/10/Complete-LCA-Facial-Tissue-Handkerchief.pdf">compared</a> resusable cotton hankies to disposable paper tissues using a <a href="https://doi.org/10.1007/BF02978505">lifecycle analysis</a>. It considered four measures of environmental impacts associated with production, transport, use and disposal:</p> <ul> <li> <p>climate change (sum of greenhouse gases: carbon dioxide, methane, water vapour, nitrous oxide and CFCs)</p> </li> <li> <p>ecosystem quality (chemical pollution of land and water)</p> </li> <li> <p>human health (carcinogenic and non‐carcinogenic toxicity to humans)</p> </li> <li> <p>resources (total energy requirements of non‐renewable energy and mineral extraction).</p> </li> </ul> <p>The verdict? Across the four measures, a cotton hanky had five to seven times greater impact than an equivalent tissue.</p> <p>And, by far, the greatest impacts were related to the production of each of these products, rather than using or disposing of them.</p> <p>If you’re still keen to use a cotton hanky, you could opt for organic cotton, which has a <a href="https://www.sei.org/publications/ecological-footprint-water-analysis-cotton-hemp-polyester/">lower ecological footprint</a> compared to standard cotton produced in the same location. But organic cotton production has <a href="https://www.nytimes.com/wirecutter/blog/is-organic-cotton-better-for-the-environment/">lower yields</a> than its conventional equivalent, meaning more land is needed to produce an equivalent amount, compounding the total environmental impact.</p> <p>If you want to feel better about using tissues, ones made from recycled material may be a better option. Their manufacture leads to <a href="https://doi.org/10.1007/s11367-013-0597-x">fewer</a> greenhouse gas emissions compared with making regular tissues.</p> <h2>The verdict</h2> <p>Wiping our noses with paper tissues we dispose of properly after use (and don’t store in our pocket), made from recycled material, is preferable from both a health and environmental perspective.</p> <p>But tissues don’t quite have the same panache as the historic and versatile cloth hanky.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/213065/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></p> <p><a href="https://theconversation.com/profiles/mark-patrick-taylor-11394"><em>Mark Patrick Taylor</em></a><em>, Chief Environmental Scientist, EPA Victoria; Honorary Professor, School of Natural Sciences, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a> and <a href="https://theconversation.com/profiles/hester-joyce-122106">Hester Joyce</a>, Adjunct Associate Professor, Creative Arts, <a href="https://theconversation.com/institutions/la-trobe-university-842">La Trobe University</a></em></p> <p><em>Image credits: Getty Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/handkerchief-or-tissue-which-ones-better-for-our-health-and-the-planet-213065">original article</a>.</em></p>

Caring

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Our planet is burning in unexpected ways - here’s how we can protect people and nature

<p><em><a href="https://theconversation.com/profiles/luke-kelly-159658">Luke Kelly</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/david-bowman-4397">David Bowman</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>; <a href="https://theconversation.com/profiles/ella-plumanns-pouton-1470045">Ella Plumanns Pouton</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/grant-williamson-109967">Grant Williamson</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>, and <a href="https://theconversation.com/profiles/michael-shawn-fletcher-99786">Michael-Shawn Fletcher</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a></em></p> <p>People have been using fire for millennia. It is a vital part of many ecosystems and cultures. Yet human activities in the current era, sometimes called the “<a href="https://theconversation.com/did-the-anthropocene-start-in-1950-or-much-earlier-heres-why-debate-over-our-world-changing-impact-matters-209869">Anthropocene</a>”, are reshaping patterns of fire across the planet.</p> <p><a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">In our new research</a>, published in the Annual Review of Environment and Resources, we used satellite data to create global maps of where and how fires are burning. We calculated about 3.98 million square kilometres of Earth’s land surface burns each year. We also examined research spanning archaeology, climatology, ecology, Indigenous knowledge and paleoecology, to better understand the causes and consequences of fires.</p> <p>Our international team found strong evidence fires are burning in unexpected places, at unusual times and in rarely observed ways. These changes in fire patterns are threatening human lives and modifying ecosystems.</p> <p>But the future does not have to be bleak. There are many opportunities to apply knowledge and practice of fire to benefit people and nature.</p> <h2>Here’s how fire patterns are changing</h2> <p>Exploring multiple approaches and scales enables a deeper understanding of where, when and how fires burn.</p> <p>Satellite data provide evidence of changes in fire patterns at a global scale. <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020RG000726">Annual fire season length</a> increased by 14 days from 1979 to 2020 and <a href="https://www.nature.com/articles/s41586-021-04325-1">night fires</a>, which indicate fires that cannot be quickly controlled, increased in intensity by 7.2% from 2003 to 2020.</p> <p>Other changes are apparent only when we look at data from particular regions. An increase in fire size and the frequency of large fires has recently been observed in <a href="https://www.pnas.org/doi/abs/10.1073/pnas.2103135118">forests and woodlands of the western United States</a>. Meanwhile fire-dependent grasslands and savannahs across <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/gcb.14711">Africa</a> and <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019GL082327">Brazil</a> have experienced reductions in fire frequency.</p> <p>It’s also important to consider the timescale and type of fire when interpreting changes. In Australia, <a href="https://www.nature.com/articles/s41467-021-27225-4">satellite records show</a> the frequency of very large forest fires has increased over the past four decades. At longer time scales, <a href="https://link.springer.com/article/10.1007/s13280-020-01339-3">charcoal and pollen records</a> indicate the frequency of low-intensity fires <a href="https://esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2395">decreased in parts of southeastern Australia</a> following British colonisation in 1788.</p> <h2>Changes in fire affect air, land and water</h2> <p>Many animals and plants have evolved strategies that enable them to thrive under particular fire patterns. This means changes to fire characteristics can <a href="https://www.science.org/doi/10.1126/science.abb0355">harm populations and ecosystems</a>.</p> <p><a href="https://conbio.onlinelibrary.wiley.com/doi/full/10.1111/conl.12905">Large and intense fires</a> are reducing the available forest habitat preferred by the greater glider. But a <a href="https://theconversation.com/research-reveals-fire-is-pushing-88-of-australias-threatened-land-mammals-closer-to-extinction-185965">lack of fire can be problematic too</a>. Threatened species of native rodents can benefit from food resources and habitats that flourish shortly after fire.</p> <p>There is evidence that emissions from recent fires are already modifying the atmosphere. The historically exceptional 2019–20 Australian wildfires produced <a href="https://www.science.org/doi/10.1126/science.abe1415#:%7E:text=Intense%2C%20widespread%20bushfires%20in%20Australia,from%20a%20moderate%20volcanic%20eruption.">record-breaking levels of aerosols</a> over the Southern Hemisphere, as well as substantial carbon emissions.</p> <p>The <a href="https://www.nature.com/articles/s41893-020-00610-5">wildfire smoke-related health costs</a> of the 2019–20 wildfires in Australia included an estimated 429 smoke-related premature deaths as well as 3,230 hospital admissions for cardiovascular and respiratory disorders.</p> <p>Changes in fire patterns are modifying water cycles, too. In the western United States, <a href="https://www.pnas.org/doi/10.1073/pnas.2009717118">fires are reaching higher elevations</a> and having strong impacts on <a href="https://www.pnas.org/doi/10.1073/pnas.2200333119">snow</a> and water availability.</p> <p>New studies are revealing how the air, land and water that support life on Earth are connected by fires. Smoke plumes from the 2019–20 Australian wildfires transported nutrients to the Southern Ocean, resulting in <a href="https://www.nature.com/articles/s41586-021-03805-8">widespread phytoplankton blooms</a>.</p> <h2>Humans are responsible for the changes</h2> <p>Human drivers such as climate change, land use, fire use and suppression, and transportation and extinction of species <a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">are causing shifts in fire patterns</a>.</p> <p>Increasing global temperatures and more frequent heatwaves and droughts increase the likelihood of fire by promoting hot, dry and windy conditions. A pattern of extreme fire weather outside of natural climate variation is already emerging in <a href="https://onlinelibrary.wiley.com/doi/10.1111/gcb.15388">North America</a>, <a href="https://link.springer.com/article/10.1007/s10584-014-1183-3">southern Europe</a> and <a href="https://iopscience.iop.org/article/10.1088/1748-9326/ac1e3a/meta">the Amazon basin</a>.</p> <p>Humans modify fire regimes by changing land use for agricultural, forestry and urban purposes. Until recent decades, large fires in tropical forests were uncommon. But <a href="https://www.nature.com/articles/s41586-021-03876-7">deforestation fires</a> used to clear primary forest for agriculture often promotes more frequent and intense uncontrolled fires.</p> <p>Humans have transported plants and animals across the globe, resulting in novel mixes of species that modify fuels and fire regimes. In many parts of the world, <a href="https://www.pnas.org/doi/abs/10.1073/pnas.1908253116">invasive grasses</a> have increased flammability and fire activity.</p> <p>Social and economic changes propel these drivers. Colonisation by Europeans and the displacement of Indigenous peoples and their skilful use of fire has been linked with fire changes in <a href="https://esajournals.onlinelibrary.wiley.com/doi/10.1002/fee.2395">Australia</a>, <a href="https://www.pnas.org/doi/10.1073/pnas.2116264119">North America</a> and <a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2015.0174">South America</a>.</p> <h2>Using knowledge and practice of fire to achieve sustainability goals</h2> <p><a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">The pace and scale of these changes</a> represent challenges to humanity, but knowledge and practice of fire can help to achieve sustainability goals.</p> <p>This includes:</p> <ul> <li><a href="https://royalsocietypublishing.org/doi/10.1098/rstb.2015.0174">good health and wellbeing</a>, by supporting community-owned solutions and fire practices that increase social cohesion and health</li> <li><a href="https://www.sciencedirect.com/science/article/pii/S0301479718314658">sustainable cities and communities</a>, by designing green firebreaks and mixed-use areas with low fuels, strategically located in the landscape</li> <li><a href="https://www.science.org/doi/10.1126/science.aam7672">life on land</a>, by tailoring use of fire to promote and restore species and ecosystems</li> <li><a href="https://www.nature.com/articles/s41561-021-00867-1">climate action</a>, by applying low-intensity fire to promote the stability of soil organic matter and increase carbon storage</li> <li><a href="https://www.mdpi.com/1660-4601/18/8/3921">reduced inequalities</a>, by allocating resources before, during, and after wildfires to at-risk communities and residents.</li> </ul> <p>As the world changes, society as a whole needs to keep learning about the interplay between people and fire.</p> <p>A deep understanding of fire is essential for achieving a sustainable future – in other words, <a href="https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-120220-055357">a better Anthropocene</a>.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/213215/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></p> <p><a href="https://theconversation.com/profiles/luke-kelly-159658"><em>Luke Kelly</em></a><em>, Associate Professor in Quantitative Ecology, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/david-bowman-4397">David Bowman</a>, Professor of Pyrogeography and Fire Science, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>; <a href="https://theconversation.com/profiles/ella-plumanns-pouton-1470045">Ella Plumanns Pouton</a>, PhD candidate, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a>; <a href="https://theconversation.com/profiles/grant-williamson-109967">Grant Williamson</a>, Research Fellow in Environmental Science, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a>, and <a href="https://theconversation.com/profiles/michael-shawn-fletcher-99786">Michael-Shawn Fletcher</a>, Professor in Biogeography, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/our-planet-is-burning-in-unexpected-ways-heres-how-we-can-protect-people-and-nature-213215">original article</a>.</em></p>

Travel Trouble

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If the world were coming to an end, what would be the most ethical way to rebuild humanity ‘off planet’?

<p><em><a href="https://theconversation.com/profiles/evie-kendal-734653">Evie Kendal</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a></em></p> <p>Last week, scientists announced that for the first time on record, Antarctic ice has failed to “substantially recover” over winter, in a “once in 7.5-million-year event”. Climate change is the <a href="https://theconversation.com/antarctica-is-missing-a-chunk-of-sea-ice-bigger-than-greenland-whats-going-on-210665">most likely culprit</a>.</p> <p>Petra Heil, a sea ice physicist from the Australian Antarctic Division, <a href="https://www.abc.net.au/news/2023-07-24/antarctic-sea-ice-levels-nosedive-five-sigma-event/102635204">told the ABC</a> it could tip the world into a new state. “That would be quite concerning to the sustainability of human conditions on Earth, I suspect.”</p> <p>And in March, a senior United Nations disarmament official <a href="https://press.un.org/en/2023/sc15250.doc.htm">told the Security Council</a> the risk of nuclear weapons being used today is higher than at any time since the end of the Cold War.</p> <p>Both warnings speak to concerns about Earth’s security. Will our planet be able to support human life in the future? And if not, will humanity have another chance at survival in space?</p> <h2>‘Billionauts’ and how to choose who goes</h2> <p>Over the past few years, we’ve witnessed the rise of the “billionaut”. The ultra-wealthy are engaged in a <a href="https://theconversation.com/billionaire-space-race-the-ultimate-symbol-of-capitalisms-flawed-obsession-with-growth-164511">private space race</a> costing billions of dollars, while <a href="https://www.forbes.com/sites/oliverwilliams1/2021/12/21/billionaire-space-race-turns-into-a-publicity-disaster/?sh=79056f7e5e4d">regular citizens often condemn</a> the wasted resources and contribution to global carbon emissions.</p> <p>Space – described in the <a href="https://www.unoosa.org/oosa/en/ourwork/spacelaw/treaties/introouterspacetreaty.html">Outer Space Treaty</a> as being the “province of all mankind” – risks instead becoming the playground of the elite few, as they try to escape the consequences of environmental destruction.</p> <p>But if we have to select humans to send into space for a species survival mission, how do we choose who gets to go?</p> <p>In Montreal last month, the <a href="https://irg.space/irg-2023/">Interstellar Research Group</a> explored the question: how would you select a crew for the first interstellar mission?</p> <p>A panel led by <a href="https://www.erikanesvold.com/">Erika Nesvold</a>, a co-editor of the new book <a href="https://global.oup.com/academic/product/reclaiming-space-9780197604793?cc=au&amp;lang=en&amp;">Reclaiming Space</a>, discussed the perspectives of gender minorities, people with disabilities and First Nations groups regarding the ideal composition for an off-world crew.</p> <p>I was on the panel to discuss my contribution to the book, which explores how we can promote procreation in our new off-world society, without diminishing the reproductive liberty of survivors.</p> <h2>The ultra-wealthy and reproductive slavery</h2> <p>The first step in deciding how to allocate limited spaces on our “lifeboat” is identifying and rejecting options that are practically or ethically unacceptable.</p> <p>The first option I rejected was a user-pay system, whereby the wealthy can purchase a seat on the lifeboat. A 2022 Oxfam report showed the investments of just 125 billionaires collectively contribute 393 million tonnes of carbon dioxide equivalent per year: <a href="https://www.oxfam.org/en/press-releases/billionaire-emits-million-times-more-greenhouse-gases-average-person#:%7E:text=Recent%20data%20from%20Oxfam's%20research,%C2%B0C%20goal%20of%20the">a million times more</a> than the average for most global citizens.</p> <p>If the ultra-wealthy are the only ones to survive an environmental apocalypse, there’s a risk they would just create another one, on another planet. This would undermine the species survival project.</p> <p>The second option I rejected was allowing a reproductive slave class to develop, with some survivors compelled to populate the new community. This would disproportionately impact cis-gender women of reproductive capacity, demanding their gestational labour in exchange for a chance at survival.</p> <p>Neither a user-pay system nor reproductive slave labour would achieve the goal of “saving humanity” in any meaningful way.</p> <p>Many would argue preserving human values - including equality, reproductive liberty, and respect for diversity - is more important than saving human biology. If we lose what makes us unique as a species, that would be a kind of extinction anyway.</p> <p>But if we want humanity to survive, we still need to build our population in our new home. So what other options do we have?</p> <h2>Reproduction and diversity</h2> <p>How can we avoid discrimination on the basis of reproductive capacity – including age, sexuality, <a href="https://theconversation.com/infertility-through-the-ages-and-how-ivf-changed-the-way-we-think-about-it-87128">fertility status</a> or personal preference?</p> <p>We could avoid any questions about family planning when selecting our crew. This would align with <a href="https://www.seek.com.au/career-advice/article/illegal-interview-questions-what-employers-have-no-right-to-ask">equal opportunity policies</a> in other areas, like employment. But we would then have to hope enough candidates selected on other merits happen to be willing and able to procreate.</p> <p>Alternatively, we could reserve a certain number of places for those who agree to contribute to population growth. Fertility would then become an inherent job requirement. This might be similar to taking on a role as a <a href="https://theconversation.com/surrogacy-laws-why-a-global-approach-is-needed-to-stop-exploitation-of-women-98966">surrogate</a>, in which reproductive capacity is essential.</p> <p>But what if, after accepting such a position on the mission, someone changed their mind about wanting children? Would they be expected to provide some sort of compensation? Would they be vulnerable to retaliation?</p> <p>The more we focus on procreation, the less diversity we will preserve in the species as a whole – especially if we deliberately select against diverse sexualities, disabilities and older people.</p> <p>A lack of diversity would also threaten the long-term viability of the new society. For example, even if we exclude all physiologically or socially infertile people from the initial crew, these traits will reappear in future generations.</p> <p>The difference is: these children would be born into a less accepting community. Cooperation will be essential for the new human society – so promoting hostility would be counterproductive.</p> <p>So, what options are left? Using a random global sample to select travellers might alleviate concerns about equity and fairness. But the ability of a random sample to maximise our survival as a species would depend on how large the sample can be.</p> <p>A global sample would minimise bias. But there’s a risk it might yield a crew without doctors, engineers, farmers or other essential personnel.</p> <h2>Random selection versus a points-based system</h2> <p>The best balance between competing needs might be a stratified random sampling method, involving randomly selecting survivors from predetermined categories. Reproductive potential might be one category. Others might focus on other elements of practical usefulness or contribution to human diversity.</p> <p>Another option is a points-based system, whereby different skills and characteristics are ranked in terms of their desirability. In this system, an elderly person who speaks multiple languages may score higher than a physiologically fertile young person, due to their ability to substantially contribute to language preservation and education.</p> <p>This does not entirely eliminate the potential for discrimination, of course. Someone would need to decide which traits are most desirable and valuable to the new human society.</p> <p>However we determine our lifeboat candidates, it should be carefully considered. In our attempt to “save humanity”, we must avoid sacrificing the very things that make us human.</p> <hr /> <p><em>Evie Kendal is a contributor to <a href="https://global.oup.com/academic/product/reclaiming-space-9780197604793?cc=au&amp;lang=en&amp;">Reclaiming Space: Progressive and Multicultural Visions of Space Exploration</a> (Oxford University Press)<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/210647/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></em></p> <p><em><a href="https://theconversation.com/profiles/evie-kendal-734653">Evie Kendal</a>, Senior lecturer of health promotion, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/if-the-world-were-coming-to-an-end-what-would-be-the-most-ethical-way-to-rebuild-humanity-off-planet-210647">original article</a>.</em></p>

Travel Trouble

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The 7 most addictive (and delicious) foods on the planet

<p><strong>Why we can't get enough</strong></p> <p>What is it about the three Cs: Chocolate, cheese and chips? For some reason, we can never get enough of them. But wanting to chow on a particular food is one thing, being addicted to it is another. Fact is, you can become addicted to a certain food, and you can blame your brain’s response to it. That’s because certain foods elicit a release of dopamine in the brain, which can lead to more cravings for that particular treat, especially when it comes to foods that are high in sugar, salt and/or fat. Addictive foods are ones that hit your brain right in its pleasure centre, ostensibly telling you that you need more, more, more.</p> <p>“When this pleasure/reward centre is stimulated, the brain starts secreting dopamine and other chemicals that make us enjoy the experience even more,” says registered dietitian Ashvini Mashru. “Because your brain loves the sensation caused by that dopamine release, it seeks more of it by creating cravings, that if listened to can cause a vicious cycle of addiction.”</p> <p><strong>Chocoholics take note</strong></p> <p>That bowl of Smarties sitting on your colleague’s desk is a delicious temptation, a crunchy chocolatey treat that’s hard to resist. What we know is that chocolate is one of the most addictive foods around because it binds to the same pleasure centres in the brain as alcohol and certain drugs, according to a 2011 study conducted by Drexel University. </p> <p>It also boasts a nice ‘mouth feel’, which stimulates oxytocin production, another feel-good hormone, according to Dan DeFigio, author of Beating Sugar Addiction for Dummies. “Over time, our brains start looking for that dopamine hit, and every time we eat chocolate, it reinforces that ‘wiring,’” he says.</p> <p><strong>More cheese please</strong></p> <p>If you’ve hovered over a cheese platter and piled up the cubes, you’ll be relieved to know that it’s not just you. Cheese, which is generally high in fat and cholesterol, also contains a substance called casomorphin that binds to the opioid or feel-good receptors in the brain. </p> <p>“Casomorphins attach to neurotransmitters in our brains and release dopamine, feel-good chemicals, that often lead us to wanting more,” says Dr Neal Barnard, author of The Cheese Trap. “While cheese does have its health benefits, it also can be seriously addictive.”</p> <p><strong>Carb fix</strong></p> <p>Reach into that bowl of potato chips, tortilla chips or pretzels over and over again, and you’ll know something is happening on the addiction front. And, while there’s no particular compound in these foods that bind to specific brain receptors to cause a euphoric, stimulating, or addictive behaviour, there’s something else at play. </p> <p>“Simple carbohydrates are seen as ‘addictive’ because they cause a quick glucose release, and this quickly increases a person’s energy, says nutritionist Celina Jean. “This energy will quickly be used up, and then you’ll be forced to eat more simple carbohydrates to keep your blood sugar raised.”</p> <p><strong>Oh, sweet sips</strong></p> <p>Not only do sugary soft drinks (including sweet tea) provide us with very little nutrients, but one 375mL can contain a staggering 43 grams of sugar. Like sugary treats, fizzy drinks can stimulate the release of dopamine. Add caffeine and you’re getting a double-energy hit. </p> <p>“Once you’re hooked on caffeine, you can suffer symptoms of withdrawal if you try to stop, including sluggishness, headaches and emotional distress,” says Mashru.</p> <p><strong>Pass the fries</strong></p> <p>Hot chips or French fries are typically crisp, hot and salty. This is a triple-threat that signals the tongue and the brain to eat more, Mashru says. The fat content in fries triggers receptors in our mouths that send a signal to our brain and gut reinforcing the desire to eat more. </p> <p>“These little potato sticks are also a comfort food,” Mashru says. “Therefore, every time you go through the line in a restaurant and see them on the menu, you may find the urge to order them as a side to your entrée irresistible.”</p> <p><strong>Ice cream, you scream</strong></p> <p>Cravings for ice cream can be insatiable – it’s all about the sugar content and creamy texture, and researchers agree that foods like ice cream, which is basically cream and milk, stimulate the brain in the same way drugs do, inducing behaviours that resemble addiction, says dietitian Keri Glassman. </p> <p>“The sugar ‘highs’ and ‘lows’ you experience are consistent with sugar ‘dependency’,” she says. “When your body gets used to sugar, you feel out of sorts when you consume less, which causes you to eat more.”</p> <p><strong>Pizza</strong></p> <p>Whether it’s the stringy salty mozzarella cheese, the fluffy dough or the sugar in the tomato sauce, pizza ranks first in food addiction, according to a recent University of Michigan study. </p> <p>That’s because when you eat it, your blood sugar zips up quickly and then when it drops, you feel hungry again and want more.</p> <p><em>Image credits: Getty Images </em></p> <p><em>This article originally appeared on <a href="https://www.readersdigest.co.nz/food-home-garden/the-most-addicting-foods-on-the-planet" target="_blank" rel="noopener">Reader's Digest</a>. </em></p>

Food & Wine

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Billionaire throws star-studded party for most famous names on the planet

<p dir="ltr">The most famous names on the planet have all gathered for an exclusive party with billionaire Michael Rubin to celebrate the American independence day weekend. </p> <p dir="ltr">Congregating at a luxurious mansion in the Hamptons, the businessman and philanthropist hosted his annual white party, sharing a highlights reel of the star-studded day on Twitter. </p> <p dir="ltr">Among the famous faces were Leo DiCaprio, Jennifer Lopez and Ben Affleck, Beyonce and Jay-Z, Tom Brady, Kevin Hart and a plethora of Kardashians. </p> <p dir="ltr">The 350 A-listers in attendance were treated to musical performances by Usher and Ne-Yo, and $700 bottles of champagne and tequila as they partied from the 5pm kick-off all the way through until 4am.</p> <blockquote class="twitter-tweet"> <p dir="ltr" lang="en">A literal movie - white party 2023 recap <a href="https://t.co/1D3vlpCNBq">pic.twitter.com/1D3vlpCNBq</a></p> <p>— Michael Rubin (@michaelrubin) <a href="https://twitter.com/michaelrubin/status/1676363041288462338?ref_src=twsrc%5Etfw">July 4, 2023</a></p></blockquote> <p dir="ltr">The famous guests were spotted pulling up in style in their parade of expensive cars and helicopters, and being escorted into the party by armies of valets and security guards.</p> <p dir="ltr">Among them was Affleck and Lopez, who brought along the actor’s 17-year-old daughter, Violet, whom he shares with ex-wife Jennifer Garner.</p> <p dir="ltr">Kevin Hart and his wife, Eniko Parrish, were spotted among the many celebrity couples drinking and dancing the night away, along with Justin Bieber and his model wife, Hailey.</p> <p dir="ltr">Rubin, 49, and his girlfriend, Camille Fishel, 32, hosted the star-studded event, sparing no expense when it came to looking after their guests, as they do each year. </p> <p dir="ltr">Rubin has an estimated fortune of more than $16 billion, making him one of the richest men in America.</p> <p dir="ltr"><em>Image credits: Twitter</em></p>

Beauty & Style

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15 facts you won’t believe are true

<p>Sometimes we become so jaded that we forget the world is an amazing place.</p> <p>In this list we’ve put together 15 facts you won’t believe are true.</p> <p><strong>To see the full list of amazing facts, scroll down.</strong></p> <p>1. Honey will <a href="http://www.smithsonianmag.com/science-nature/the-science-behind-honeys-eternal-shelf-life-1218690/?no-ist" target="_blank" rel="noopener"><span><strong>never go off</strong></span></a>, no matter how long you store it.</p> <p>2. The Turritopsis Nutricula jellyfish is <a href="http://immortal-jellyfish.com/" target="_blank" rel="noopener"><span><strong>c</strong></span></a><span style="text-decoration: underline;"><strong><a href="http://immortal-jellyfish.com/" target="_blank" rel="noopener">onsidered biologically immortal</a></strong></span>.</p> <p>3. The heart of a blue whale is so big a human could potentially swim through its arteries (of course why you’d want to do so is another matter altogether).</p> <p>4. Yet the throat of a blue whale is <a href="https://en.wikipedia.org/wiki/Blue_whale#Description_and_behaviour" target="_blank" rel="noopener"><span><strong>so small</strong></span></a> (comparatively speaking at least) it is physically incapable of swallowing anything bigger than a beach ball. </p> <p>5. For every person on Earth there are <a href="http://www.peta.org/issues/wildlife/dealing-household-guests/ants/" target="_blank" rel="noopener"><span><strong>around 1.6 million ants</strong></span></a>.</p> <p>6. An octopus has <a href="http://www.smithsonianmag.com/ist/?next=/science-nature/ten-curious-facts-about-octopuses-7625828/" target="_blank" rel="noopener"><span><strong>three hearts</strong></span></a>.</p> <p>7. Feng shui was originally the art of choosing the <a href="http://www.awarenessmag.com/marapr07/ma07_feng_shui.htm" target="_blank" rel="noopener"><span><strong>best place for a grave</strong></span></a>.</p> <p>8. There are <span style="text-decoration: underline;"><strong><a href="http://www.sciencedaily.com/releases/2008/06/080603085914.htm" target="_blank" rel="noopener">ten times more bacteria</a></strong></span> than cells in the human body.</p> <p>9. Believe it or not, this is what sand looks like under a microscope:</p> <p>10. Oxford University actually <a href="http://thetab.com/uk/oxford/2013/10/20/six-things-oxford-predates-11736" target="_blank" rel="noopener"><span><strong>predates the Aztec Empire</strong></span></a>.</p> <p>11. No one has <a href="https://www.ar15.com/archive/topic.html?b=1&amp;f=5&amp;t=1163790" target="_blank" rel="noopener"><span><strong>successfully tamed</strong></span></a> an African elephant.</p> <p>12. Catfish have <a href="http://www.itv.com/news/central/2015-07-09/ten-facts-about-fish-that-might-surprise-you/" target="_blank" rel="noopener"><span><strong>27,000 taste buds</strong></span></a> (four times as many as humans). </p> <p>13. Santa Claus <a href="https://en.wikipedia.org/wiki/Basil_of_Caesarea#Commemorations_of_Basil" target="_blank" rel="noopener"><span><strong>is called Basil</strong></span></a> in Cyprus.</p> <p>14. Scientists have suggested <a href="http://www.bbc.com/news/science-environment-24477667" target="_blank" rel="noopener"><span><strong>rain is made</strong></span></a> from diamonds on Saturn and Jupiter.</p> <p>15. The image on the left is a candle burning on Earth, and the image on the right is a candle burning in a zero gravity environment. What a difference! </p> <p><strong>Related links:</strong></p> <p><span style="text-decoration: underline;"><em><a href="../news/news/2016/03/couple-give-60-million-lottery-away/"><strong>Couple gives $60 million lottery win away</strong></a></em></span></p> <p><span style="text-decoration: underline;"><em><a href="../news/news/2016/03/find-letter-t-image-puzzle/"><strong>Can you find the letter “T” in this image?</strong></a></em></span></p> <p><span style="text-decoration: underline;"><em><a href="../news/news/2016/03/stunning-images-antarctica-remote-beauty/"><strong>Stunning images of Antarctica’s remote beauty</strong></a></em></span></p> <p><em>Image credit: Shutterstock</em></p>

News

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Who wants to be a billionaire? Thankfully for the planet, most people don’t

<p>Reality check: most people don’t actually want to be billionaires.</p> <p>A <a href="https://dx.doi.org/10.1038/s41893-022-00902-y" target="_blank" rel="noreferrer noopener">new study</a> is challenging the long-held economic belief that it’s in human nature to have unlimited wants, finding this widely held assumption only applies to a minority of people.</p> <p>In a survey of nearly 8,000 people from 33 countries across six continents, social psychologists asked people how much money they wanted to accrue in their “absolutely ideal life”.</p> <p>They found that in 86% of countries most people thought they could achieve the ideal life with US$10 million (AUD$14.3 million) or less, and in some countries the ideal was as little as US$1 million (AUD$1.4 million), across their entire lives.</p> <p>To put that into context, the current richest person in the world, Elon Musk, has a net worth of more than US$200 billion – that’s enough for 200,000 people to achieve their perceived ideal lives.</p> <p>The push to continually increase individual wealth and pursue unending economic growth has had dire environmental consequences for the planet, with resource use and <a href="https://cosmosmagazine.com/earth/earth-sciences/global-pollution-mapped-for-good-and-bad/" target="_blank" rel="noreferrer noopener">pollution</a> increasing alongside wealth.</p> <p>But these findings, published in <em>Nature Sustainability</em>, challenge the idea that approaches relying on limiting wealth and growth to achieve sustainability are against human ideals and aspirations.</p> <p>“The findings are a stark reminder that the majority view is not necessarily reflected in policies that allow the accumulation of excessive amounts of wealth by a small number of individuals,” explains co-author Dr Renata Bongiorno, a social psychologist at the University of Exeter and Bath Spa University in the UK.</p> <p>“If most people are striving for wealth that is limited, policies that support people’s more limited wants, such as a wealth tax to fund sustainability initiatives, might be more popular than is often portrayed.”</p> <h2>Would you want to win a billion in the lottery?</h2> <p>The researchers specifically asked people to imagine their absolutely ideal life, and then consider how much money would want in that life.</p> <p>Participants made a choice of their preferred prize in a hypothetical lottery, choosing from US$10,000, US$100,000, US$1 million, US$10 million, US$100 million, US$1 billion, US$10 billion or US$100 billion.</p> <p>It was emphasised that the odds of winning each lottery were identical.</p> <p>The researchers hypothesised that people with insatiable wants – those who cannot conceive of a point where their wants would be fully satiated, so they will always aspire to accumulate more/better goods – would choose the maximum of US$100 billion over all the lesser (limited) amounts.</p> <p>But while people with unlimited wants were identified in every country surveyed, they were always in the minority. They tended to be younger people and city-dwellers, who placed more value on success, power and independence.</p> <p>They were also more common in countries with greater acceptance of inequality, and in countries that are more collectivistic – that focus more on group than individual responsibilities and outcomes. </p> <p>“The ideology of unlimited wants, when portrayed as human nature, can create social pressure for people to buy more than they actually want,” says lead researcher Dr Paul Bain, from the Department of Psychology at the University of Bath, UK.</p> <p>“Discovering that most people’s ideal lives are actually quite moderate could make it socially easier for people to behave in ways that are more aligned with what makes them genuinely happy and to support stronger policies to help safeguard the planet.”</p> <p><em>Image credits: Getty Images</em></p> <p><em><img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=195370&amp;title=Who+wants+to+be+a+billionaire%3F+Thankfully+for+the+planet%2C+most+people+don%E2%80%99t" width="1" height="1" /></em></p> <div id="contributors"> <p><em>This article was originally published on <a href="https://cosmosmagazine.com/news/who-wants-to-be-a-billionaire/" target="_blank" rel="noopener">cosmosmagazine.com</a> and was written by Imma Perfetto. </em></p> </div>

Retirement Income

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Astronomers have detected another ‘planet killer’ asteroid. Could we miss one coming our way?

<p>If you surfed the web this morning, you may have seen news of the latest existential threat to humanity: a “planet killer” asteroid named 2022 AP7.</p> <p>Luckily for us 2022 AP7 “has no chance to hit the Earth currently”, <a href="https://www.theguardian.com/science/2022/nov/01/huge-planet-killer-asteroid-discovered-and-its-heading-our-way">according</a> to Scott Sheppard at the Carnegie Institution for Science. He and his international team of colleagues <a href="https://iopscience.iop.org/article/10.3847/1538-3881/ac8cff/pdf">observed 2022 AP7</a> in a trio of “rather large” asteroids obscured by the Sun’s glare (the other two don’t pose a risk).</p> <p>2022 AP7 orbits the Sun every five years, and currently crosses Earth’s orbit when Earth is on the other side of the Sun to it. Eventually its movement will sync with Earth’s and it will cross much closer by, but this will be centuries into the future.</p> <p>We simply don’t know enough about 2022 AP7 to precisely predict the danger it may pose centuries from now. At the same time, we suspect there could be other “planet killers” out there yet to be discovered. But how many? And what’s being done to find them?</p> <p><strong>What makes a planet killer?</strong></p> <p>Asteroid 2022 AP7 is the largest potentially hazardous asteroid (PHA) found in eight years, with a diameter between 1.1km and 2.3km. For context, an asteroid with a diameter more than 1km is enough to trigger a <a href="https://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event">mass extinction event</a> on Earth.</p> <p>As well as having a diameter greater than 1km, an asteroid also needs to have an orbit that crosses Earth’s to be considered potentially dangerous. In the case of 2022 AP7, any threat is centuries down the track. The important point is it has been detected and can now be tracked. This is the best possible outcome.</p> <p>It is estimated we’ve already <a href="https://theconversation.com/in-a-world-first-nasas-dart-mission-is-about-to-smash-into-an-asteroid-what-will-we-learn-189391">discovered</a> about 95% of potentially hazardous asteroids, and that there are fewer than 1,000 of these. The work of Sheppard and colleagues highlights that hunting down the remaining 5% – some 50 asteroids – will be a massive effort.</p> <figure class="align-center "><img src="https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=304&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=304&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=304&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=382&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=382&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=382&amp;fit=crop&amp;dpr=3 2262w" alt="" /><figcaption><span class="caption">Statistically, there’s less of a chance of a larger asteroid colliding with Earth compared to a smaller one.</span> <span class="attribution">NASA</span></figcaption></figure> <p><strong>What constitutes a near miss?</strong></p> <p>NASA <a href="https://www.jpl.nasa.gov/asteroid-watch">closely tracks</a> all known objects in the Solar System. But every now and again an object will catch us off guard.</p> <p>In 2021, we had a close call with an asteroid called <a href="https://en.wikipedia.org/wiki/2021_UA1">2021 UA1</a>. It came only a few thousand kilometres from Earth, over the Antarctic. In cosmic terms, this is uncomfortably close. However, 2021 UA1 was only two metres across, and therefore posed no substantial risk.</p> <p>There are likely hundreds of millions of objects of this size in our Solar System, and it’s not uncommon for them to impact Earth. In these cases, most of the object burns up in the atmosphere and creates a spectacular light show, with little risk to life.</p> <p>In 2019 another <a href="https://theconversation.com/an-asteroid-just-buzzed-past-earth-and-we-barely-noticed-in-time-120972">asteroid</a> with a 100m diameter passed Earth some 70,000km away. It was publicly announced mere hours before it flew past. While it wasn’t as close, it was of a much more concerning size.</p> <p>These near misses reiterate how important it is for us to speed up the search for near-Earth objects.</p> <p><strong>Blind spots</strong></p> <p>The reason we haven’t already found every object that could one day pass nearby Earth is largely because of observational blind spots, and the fact we can’t observe all parts of the sky all the time.</p> <p>To find 2022 AP7, Sheppard and colleagues used a telescope at twilight soon after the Sun had set. They had to do this because they were looking for asteroids in the vicinity of Venus and Earth. Venus is currently on the <a href="https://theskylive.com/where-is-venus">other side of the Sun</a> to Earth.</p> <p>Making observations close to the Sun is difficult. The Sun’s glare overwhelms the weak light reflected off small asteroids – presenting a blind spot. But just before and after sunset, there’s a small window in which the Sun’s glare no longer blocks the view.</p> <p>Right now there are only about 25 asteroids known to have well-determined orbits that lie entirely within Earth’s orbit. More are likely to be discovered, and these may contribute significantly to the missing 5% of potentially hazardous asteroids.</p> <p><strong>The Near-Earth Object Surveyor</strong></p> <p>A recent NASA mission spectacularly demonstrated that humans can purposefully change the trajectory of an asteroid. NASA’s DART (<a href="https://www.nasa.gov/planetarydefense/dart/dart-news">Double Asteroid Redirection Test</a>) mission collided a vending-machine-sized spacecraft into a 160m diameter minor-planet moon called Dimorphos.</p> <figure class="align-center "><img src="https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=338&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=338&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=338&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=424&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=424&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=424&amp;fit=crop&amp;dpr=3 2262w" alt="" /><figcaption><span class="caption">The DART spacecraft successfully collided with Dimorphos, which itself was orbiting a larger asteroid named Didymos.</span> <span class="attribution">NASA/Johns Hopkins APL/Steve Gribben</span></figcaption></figure> <p>The collision altered Dimorphos’s 12-hour orbital period by more than 30 minutes, and was declared a resounding success. So it’s plausible for humans to redirect a hazardous asteroid if we find one.</p> <p>That said, we’d have to find it well in advance. Potentially hazardous asteroids are much larger than Dimorphos, so a bigger collision would be required with plenty of lead time.</p> <p>To do this, NASA has plans to survey for potentially hazardous objects using a telescope in space. Its <a href="https://www.jpl.nasa.gov/missions/near-earth-object-surveyor">Near-Earth Object (NEO) Surveyor</a>, scheduled to launch in 2026, will be able to survey the Solar System very efficiently – including within blind spots caused by the Sun.</p> <p>That’s because the glare we see while observing from Earth is caused by Earth’s atmosphere. But in space there’s no atmosphere to look through.</p> <figure class="align-center "><img src="https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=363&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=363&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=363&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=457&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=457&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=457&amp;fit=crop&amp;dpr=3 2262w" alt="" /><figcaption><span class="caption">The NEO Surveyor spacecraft won’t have the issue of observational blind spots when hunting for asteroids.</span> <span class="attribution">NASA/JPL/University of Arizona</span></figcaption></figure> <p>It’s very likely the Near-Earth Object Surveyor will reveal new objects, and help us characterise a large number of objects to greatly improve our understanding of threats.</p> <p>The key is to find as many objects as possible, categorise them, track the risks, and plan a redirection mission as much in advance as possible. The fact that all of these elements of planetary defence are now a reality is an amazing feat of science and engineering. It is the first time in human history we have these capabilities.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/193709/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></p> <p><em>Writen by Steven Tingay. Republished with permission from <a href="https://theconversation.com/astronomers-have-detected-another-planet-killer-asteroid-could-we-miss-one-coming-our-way-193709" target="_blank" rel="noopener">The Conversation</a>.</em></p> <p><em>Image: </em><em>DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA/J. da Silva/Spaceengine</em></p>

Technology

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Why ‘best before’ food labelling is not best for the planet or your budget

<p>UK supermarkets have <a href="https://metro.co.uk/2022/08/03/which-supermarkets-are-scrapping-best-before-dates-and-why-17117556/">removed “best before” dates</a> on thousands of fresh food products in an effort to reduce food waste.</p> <p>One of the major supermarket chains, Sainsbury’s, is replacing these labels with product messaging that says “<a href="https://www.fruitnet.com/fresh-produce-journal/sainsburys-axes-best-before-dates-on-more-fruit-and-veg/247057.article">no date helps reduce waste</a>”.</p> <p>Apples, bananas, potatoes, cucumbers and broccoli are among the most wasted foods. Removing “best before” labels from these foods alone will reduce waste by an estimated <a href="https://wrap.org.uk/taking-action/food-drink/initiatives/food-waste-reduction-roadmap">50,000 tonnes a year</a>.</p> <p>In Australia we produce <a href="https://www.fial.com.au/sharing-knowledge/food-waste">7.6 million tonnes of food waste every year</a> – about 300kg per person. <a href="https://workdrive.zohopublic.com.au/external/ba011474a921ef40d77287a482fc9b257083a646708e3b38b6debeea81cdf81b">About 70%</a> of what we throw out is still edible. Why aren’t we following the UK’s example?</p> <p> </p> <p>Some might worry about food safety. But two types of date labels – “best before” and “use by” – are used in Australia. “Use by” labels would still alert us to when food can no longer be regarded as safe to eat.</p> <p>And consumers will still be able to assess the state of fresh produce for themselves.</p> <h2>Food waste has huge impacts</h2> <p>Food waste costs Australia <a href="https://workdrive.zohopublic.com.au/external/ba011474a921ef40d77287a482fc9b257083a646708e3b38b6debeea81cdf81b">A$36.6 billion a year</a>.</p> <p>This waste occurs right across the supply chain, including primary production, manufacturing, distribution, retail and hospitality. However, households produce more than half of the waste, at an average cost per household of A$2,000 to $2,500 a year.</p> <p> </p> <p>In 2017, the Australian government <a href="https://www.dcceew.gov.au/environment/protection/waste/food-waste?state=tas#national-food-waste-strategy">pledged to halve food waste</a> by 2030 when it launched the <a href="https://www.dcceew.gov.au/environment/protection/waste/publications/national-food-waste-strategy">National Food Waste Strategy</a>.</p> <p>This is a complex issue, but one simple solution could be to follow the UK and remove “best before” dates.</p> <h2>How will you know if food is still safe?</h2> <p>Our labelling system is fairly straightforward, but many consumers don’t understand the difference between “best before” and “use by”. This confusion leads them to throw away tonnes of food that’s still suitable for eating.</p> <p>In Australia, the regulatory authority <a href="https://www.foodstandards.gov.au/consumer/labelling/dates/Pages/default.aspx">Food Standards</a> provides guidance for manufacturers, retailers and consumers on using dates on product labels. These dates indicate how long food products can be sold, and kept, before they deteriorate or become unsafe to eat.</p> <p>Food with a “best before” date can be legally sold and consumed after that date. These products should be safe, but may have lost some of their quality.</p> <p>Products past their “use by date” are considered not safe.</p> <p>The food supplier is responsible for placing date labels on the product.</p> <p>Differences in packaging and date labelling can be subtle. For example, lettuce sold loose or in an open plastic sleeve does not have a “best before” date. The same lettuce packaged in a sealed bag does.</p> <p>Bread is the only fresh food that uses a different system with “baked on” or “baked for” date labels.</p> <p>Some foods, such as canned goods and food with a shelf life of two years or more, don’t have to be labelled with “best before” dates because they usually retain their quality for many years. They are typically eaten well before they deteriorate.</p> <p>Food producers and retailers are keen to keep the labelling status quo, because it makes it easier to <a href="https://www.vox.com/22559293/food-waste-expiration-label-best-before">manage stock</a> and <a href="https://journals.sagepub.com/doi/full/10.1509/jppm.14.095">encourages turnover</a>.</p> <h2>The case for packaging</h2> <p>Some packaging is used to separate branded products such as fruit varieties protected by <a href="https://theconversation.com/the-case-of-the-pirated-blueberries-courts-flex-new-muscle-to-protect-plant-breeders-intellectual-property-126763">plant breeders’ rights</a>, organic products and imperfect vegetable ranges. Once packaged, these products require a “best before” date.</p> <p>Plastic packaging can greatly increase the shelf life of some vegetables. In these cases, it effectively reduces food waste. A striking example is cucumbers. Plastic wrap can extend their shelf life from a <a href="https://theconversation.com/why-some-plastic-packaging-is-necessary-to-prevent-food-waste-and-protect-the-environment-117479">few days to two weeks</a>.</p> <p>Vegetables such as broccoli and cauliflower contain beneficial anti-cancer compounds called <a href="https://www.frontiersin.org/articles/10.3389/fnut.2016.00024/full">glucosinolates</a>. Plastic packaging that seals in <a href="https://www.food-safety.com/articles/1324-naturally-preserving-food-with-gases">specialty gas</a> preserves these longer. However, overcooking quickly erases this packaging benefit.</p> <figure class="align-center "></figure> <h2>Dead or alive?</h2> <p>The chemistry of a fruit or vegetable starts changing the moment it is picked. Some types of produce, such as bananas and pears, are picked early so they ripen in the shop and at home. Other produce, such as sweet corn and peas, rapidly decline in the quality and quantity of flavours and nutrients once they’re picked. Snap freezing is an excellent way to preserve this produce.</p> <p>Fresh fruits and vegetables are still alive. Their cells remain full of chemical reactions and enzymatic activity.</p> <p>This is why a cut apple turns brown. It’s also why ethylene gas released from bananas and other fruits can shorten the life of their neighbours in the fruit bowl.</p> <p>Potatoes, one of the most wasted products, are sold with “best before” dates when packaged in plastic bags. But if stored correctly in low light and in a “breathable” bag (paper or hessian), potatoes stay “alive” and edible for months. Just make sure you cut away any green parts, which <a href="https://theconversation.com/can-you-really-be-poisoned-by-green-or-sprouting-potatoes-63437">contain toxic solanine</a>.</p> <p>As well as fresh produce’s own cellular activity, there is microbial activity in the form of bacteria and fungi.</p> <p>Fortunately, we come equipped with a number of evolved chemical sensors. We can <a href="https://theconversation.com/how-to-avoid-food-borne-illness-a-nutritionist-explains-153185">feel, see, sniff and taste</a> the state of fruits, vegetables and other products. Trust (and train) your instincts.</p> <h2>Questions to ask yourself</h2> <p>To reduce food waste, we need a combination of approaches, including appropriate packaging, sensible labelling and consumer awareness.</p> <p>Ideally, the <a href="https://www.foodstandards.gov.au/code/pages/default.aspx">Australian and New Zealand Food Standards Code</a> would be updated to reflect a more nuanced view of packaged fresh foods.</p> <p>In the short term, consumer awareness and buying power are the best drivers of change. Ask yourself questions like:</p> <ul> <li> <p>Do I need a packaged product?</p> </li> <li> <p>Does the packaging enhance shelf life?</p> </li> <li> <p>Would I buy less if it wasn’t packaged?</p> </li> </ul> <p>Thinking about these questions will help us reduce the impacts of food waste.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/189686/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/louise-grimmer-212082">Louise Grimmer</a>, Senior Lecturer in Retail Marketing, <em><a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a></em> and <a href="https://theconversation.com/profiles/nathan-kilah-599082">Nathan Kilah</a>, Senior Lecturer in Chemistry, <em><a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a></em></p> <p>This article is republished from <a href="https://theconversation.com">The Conversation.</a> Read the <a href="https://theconversation.com/why-best-before-food-labelling-is-not-best-for-the-planet-or-your-budget-189686">original article</a>.</p> <p><em>Images: Getty</em></p>

Food & Wine

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The planets are aligning and here’s how to see it

<p dir="ltr">For the first time in 18 years, five celestial bodies will be aligned in an event you’ll be able to see with your naked eye.</p> <p dir="ltr">Mercury, Venus, Mars, Jupiter and Saturn will be visible for most of June, with the <em><a href="https://www.australiangeographic.com.au/news/2022/05/get-ready-to-see-the-planets-align-in-australian-skies-this-june/" target="_blank" rel="noopener">Australian Geographic</a></em> reporting that 6am each morning (or 30 minutes before sunrise for <a href="https://www.newshub.co.nz/home/new-zealand/2022/06/planetary-alignment-to-dazzle-new-zealand-skies-this-month.html" target="_blank" rel="noopener">New Zealanders</a>) is the prime time to see them all aligned.</p> <p dir="ltr">“If you get up before sunrise, you will be able to spot Mercury closest to the eastern horizon followed by the bright Venus,” Auckland’s Stardome Observatory said in a statement.</p> <p dir="ltr">“Mars and Jupiter will be close together and high in the sky, while Saturn will be in the northern part of the sky.</p> <p><span id="docs-internal-guid-4b93900f-7fff-50c3-a092-2853127bb0d4"></span></p> <p dir="ltr">“The positions of each planet will slightly change every morning but they will all remain in the sky for the month.”</p> <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-permalink="https://www.instagram.com/p/CehKH8bB788/?utm_source=ig_embed&amp;utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/p/CehKH8bB788/?utm_source=ig_embed&amp;utm_campaign=loading" target="_blank" rel="noopener">A post shared by Stardome (@stardome_nz)</a></p> </div> </blockquote> <p dir="ltr">Between June 9-27, the Moon will also be passing near each of the planets, making it easier to see each planet on these dates: </p> <ul> <li dir="ltr" aria-level="1"> <p dir="ltr" role="presentation">June 9 - Saturn</p> </li> <li dir="ltr" aria-level="1"> <p dir="ltr" role="presentation">June 22 - Jupiter</p> </li> <li dir="ltr" aria-level="1"> <p dir="ltr" role="presentation">June 23 - Mars</p> </li> <li dir="ltr" aria-level="1"> <p dir="ltr" role="presentation">June 26 - Venus</p> </li> <li dir="ltr" aria-level="1"> <p dir="ltr" role="presentation">June 27 - Mercury</p> </li> </ul> <p dir="ltr">If the conditions are just right, we might also get the chance to spot Uranus on June 25 - though you’ll need a pair of binoculars to catch the distinctly green-coloured dot to the right of the crescent Moon.</p> <p dir="ltr"><span id="docs-internal-guid-92a81228-7fff-672d-e592-49f9c48787a2"></span></p> <p dir="ltr"><em>Image: NASA / JPL-Caltech</em></p>

Domestic Travel

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Boss threatens to sue employees over wage talk

<p dir="ltr">An employee has called out her manager after he threatened to fire staff for talking about their wages. </p> <p dir="ltr">The business owner of Planet Fitness gym in Kentucky, US, hung a poster on the wall informing staff not to talk about their wages because it is illegal. </p> <p dir="ltr">However, under the National Labor Relations Act, employees are entitled to speak about their wages freely. </p> <p dir="ltr">“ATTENTION ALL SUBORDINATES,” the letter, which was shared to Reddit began.</p> <p dir="ltr">“Effective immediately, conversing about wages (both on duty and off duty) is strictly forbidden,</p> <p dir="ltr">“This is considered proprietary information and as such, it is protected legally.</p> <p dir="ltr">“If you are overheard speaking (OR LISTENING TO!!) a conversation in which wages are discussed, you will receive disciplinary action up to and including termination.”</p> <p dir="ltr">One of the gym’s employees, Shelly, did not accept her boss's premise and decided to get back at him.</p> <p dir="ltr">Another photo shared to the post shows multiple hammers and sickles drawn on it - representative of the communist party.</p> <p dir="ltr">“Seeing as you’re a manager in the great illustrious word (sic) of Planet Fitness gym franchises, it may behoove (sic) you to become familiar with the laws pertaining to it,” Shelly wrote.</p> <p dir="ltr">“Sprinkling legalese and word-salad across an 8.5x11 paper you printed does not make a legal doc.</p> <p dir="ltr">“Needless to say, you can’t legally tell us not to discuss wages in the good ol’ U.S. of A. We will continue to do so.”</p> <p dir="ltr">She ended the note with “Love, $10.50 an hour Shelly” which then saw her colleagues write their own wages. </p> <p dir="ltr">Viewers commended Shelly for the move which showed a united front against the boss who was very much in the wrong.</p> <p dir="ltr">"I LOVE $10.50 an hour Shelly!" someone wrote. </p> <p dir="ltr">"Long Live Shelly. I hope she is $25.00 an hour Shelly very very soon,” another commented.</p> <p dir="ltr">“I pledge allegiance to the flag of the United States of SHELLY SHELLY!" another joked.</p> <p dir="ltr"><em>Images: Reddit</em></p>

Money & Banking

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“Bail, bail, bail!”: Robert Irwin’s narrow croc escape

<p>Robert Irwin was left running for his life from a 350-kilogram crocodile in a heart-stopping clip.</p><p>After one of Australia Zoo’s crocs ignored the bait offered to him - instead making a beeline for Robert - the 18-year-old was forced to “bail” the exercise.</p><p>In the clip from Crickey! It’s the Irwins, Robert detailed one of the zoo’s “biggest and challenging moves,” switching one of their “wildest crocodiles Casper” to the “Crocoseum” enclosure.</p><p>“Before Casper makes his debut in the Crocoseum we need to do a bit of a test, just to make sure that he’s settling in nicely to this new enclosure,” Robert said.</p><p>“If he’s coming out of the water giving big strikes, that means he’s going to be ready for the Crocoseum show.”</p><p>Robert explained that one brave zookeeper would have to jump into Casper’s brand-new environment.</p><p>He shared that the croc has displayed “wild behaviour since [his late father Steve Irwin] first got Casper,” admitting that the task ahead of him was “quite terrifying”.</p><p>Robert bravely stepped into the enclosure, approaching the water with bait ready.</p><p>Suddenly, the croc leaped out of the water, snapping its jaw towards the food Robert was using as bait.</p><p>“Yeah, he’s keen, jeez he’s keen,” Robert said reacting to the croc’s speed and intensity.</p><p>Things went downhill very quickly as the croc was clearly uninterested in the bait Robert was offering.</p><p>“Bail, bail, bail, bail, bail, bail,” Robert repeated as he ran across the exhibit in a heart-stopping moment.</p><p>The clip shows Robert running from a birds-eye view, clearly showing his narrow escape.</p><p>The full video was shared on social media by Robert, and is taken from the season finale of the TV show Crickey! It’s the Irwins.</p><p><em>Images: Animal Planet </em></p>

Travel Trouble

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Electric cars alone won’t save the planet. We’ll need to design cities so people can walk and cycle safely

<p>At the COP26 climate summit, world politicians patted themselves on their backs for <a href="https://www.rnz.co.nz/news/world/455658/cop26-agrees-new-global-climate-deal-with-last-minute-change-on-coal">coming to a last-minute agreement</a>. Humanity now waits with bated breath to see if countries implement the commitments they made, and if those commitments help the planet.</p> <p>If the rest of our climate progress mirrors the policies around transportation, we’re in for a difficult future.</p> <p>COP26 may have been one of the last chances to head off devastating climate change, and yet, the best and boldest action our leaders could envision for transportation was the universal adoption of electric vehicles (EVs) — with a vague nod to <a href="https://www.forbes.com/sites/carltonreid/2021/11/10/electric-cars-wont-save-the-planet-say-transport-experts-at-cop26/?sh=15ebb8967978">active and public transport</a>.</p> <p>EVs are exciting for politicians, many businesses and a few drivers. They give us the illusion we are dramatically reducing our environmental impact while changing virtually nothing about our lifestyles.</p> <p>But EVs do what cars with internal combustion engines (ICE) have always done to our urban areas. They make it possible to put greater distances between the places we live, work and shop. But ever expanding cities are unsustainable.</p> <p>Building endlessly into greenfield areas and swapping forests or agricultural land for low-density housing uses exorbitant amounts of limited resources. The further out our cities grow, the less interest there is in building up to achieve the scale our urban areas need for the efficient use of infrastructures like water, sewerage, electricity and public transport.</p> <h2>Electric cars are still cars</h2> <p>Electric cars make our cities less attractive and less efficient for more sustainable modes of transport. No matter the type of propulsion, people driving cars kill 1.35 million people globally, including more than 300 in New Zealand, every year.</p> <p>More cars in cities mean more space taken for parking, less room and more danger for active modes and less efficient public transport. Plugging in a car doesn’t stop it from being a lethal machine or causing congestion.</p> <p>There is still no clear and sustainable pathway to manage the e-waste generated by EVs. Electric cars are not “green”. They still use tyres which create massive waste streams. Tyre wear produces microplastics that <a href="https://www.iucn.org/news/secretariat/201702/invisible-plastic-particles-textiles-and-tyres-major-source-ocean-pollution-%E2%80%93-iucn-study">end up in our waterways and oceans</a>.</p> <p>Although EVs use regenerative braking, which is better than traditional internal-combustion cars, they still use brake pads when the brakes are applied. Braking generates <a href="https://www.ecan.govt.nz/get-involved/news-and-events/2018/the-hidden-pollutant-in-our-brake-pads/">toxic dust composed of heavy metals</a> like mercury, lead, cadmium and chromium. These heavy metals make their way to our streams and rivers, embedding themselves in these waterways forever.</p> <h2>Driving less, switching to active transport</h2> <p>Even if EVs were great for the planet, we may not get to a level of use in New Zealand to meaningfully reduce transport emissions to merit our climate goals.</p> <p>New Zealand introduced subsidies in July this year, but at this point <a href="https://www.transport.govt.nz//assets/Uploads/Report/AnnualFleetStatistics.pdf">less than 0.5% of the vehicle fleet is fully electric</a>. At the current rate of EV adoption, it will take many decades before enough electric motors propel our vehicle fleet to reduce greenhouse gas emissions.</p> <p>According to the Climate Change Commission’s <a href="https://www.climatecommission.govt.nz/our-work/advice-to-government-topic/inaia-tonu-nei-a-low-emissions-future-for-aotearoa/">advice to the government</a>, to achieve New Zealand’s 2050 net zero target, at least 50% of imported light vehicles would need to be fully electric by 2029, with no light internal-combustion vehicle imports from the early 2030s. The report goes on to concede that:</p> <blockquote> <p>Even with the rapid switch to EVs, roughly 80% of the vehicles entering the fleet this decade would still be ICE vehicles.</p> </blockquote> <p>The current rates of EV adoption reflect uptake by the <a href="https://sciencepolicyreview.org/wp-content/uploads/securepdfs/2021/08/A_perspective_on_equity_in_the_transition_to_electric_vehicles.pdf">wealthiest in our society</a>. Once those with the greatest disposable income purchase electric cars, we can expect the adoption curve to flatten.</p> <p>It is unfair to expect middle and lower-income people to replace their current vehicles with more expensive electric cars. Mitigating emissions through consumerism is highly inequitable. We are placing the most significant burden on the most vulnerable groups.</p> <p>Those who push technology like EVs make big promises that lull us into a false sense that we can live our lives in virtually the same way we do now and not worry about the planet. In reality, our lifestyles need to undergo significant changes to make a meaningful impact.</p> <p>Despite all this, there is good news. The changes needed to move us closer to a sustainable future are many of the things a lot of us love about living in a community. It’s about bringing different land uses closer together to make it possible to live, work and shop in your neighbourhood. It’s about connecting communities with cycling and public transport infrastructure for longer trips.</p> <p>Life as we know it will have to change, but that change could be for the better. We don’t need to ditch the more than three million fossil fuel cars we already have, but we should drive them a lot less. Though it sounds nice, buying a new electric car won’t save the planet.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important;" src="https://counter.theconversation.com/content/171818/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><span><a href="https://theconversation.com/profiles/timothy-welch-1252494">Timothy Welch</a>, Senior Lecturer in Urban Planning, <em><a href="https://theconversation.com/institutions/university-of-auckland-1305">University of Auckland</a></em></span></p> <p>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/electric-cars-alone-wont-save-the-planet-well-need-to-design-cities-so-people-can-walk-and-cycle-safely-171818">original article</a>.</p> <p><em>Image: Shutterstock</em></p>

Domestic Travel

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Teacher kills 9-year-old handing out “Save The Planet” flyers

<p><span>While handing out homemade 'Save the Planet' flyers on the street, a nine-year-old girl was kidnapped, tortured and stabbed to death by a teacher, according to Russian police.</span></p> <p><span>Sofia Zhavoronkova’s head was “smashed” and her face and body “disfigured” after she was lured home by Ulyana Lanskaya, 40, an English language tutor. </span></p> <p><span>Hundreds attended the girl’s funeral, many in tears, said local reports in Vologda.</span></p> <p><span>Sofia hand wrote the flyers in a notebook with 'save the planet 'announcements', which she handed out to strangers with her friend Alla. </span></p> <p><span>One read: “Do not throw rubbish on the ground, because you are polluting nature.”</span></p> <p><span>Lanskaya - now remanded in custody - had seen the girls distributing the messages to passers-by and praised them for their green initiative.</span></p> <p><span>“Well done, girls, come on, I'll buy you something tasty,” she told them, according to the mother of the other girl.</span></p> <p><span>Alla was told by the teacher to go home - unharmed - before she is alleged to have attacked and killed Sofia. </span></p> <p><span>The woman took the girls to a cafe for cake, and bought sweets and ice cream for them before allegedly luring them to her home.</span></p> <p><span>“Sofia came up with the idea of handing out flyers. She herself wrote them on sheets from her notebook,” said Alla's unnamed mother.</span></p> <p><span>Lanskaya is reported to have been distraught after the authorities barred her from raising her own son and daughter, and said Sofia looked like her own child.</span></p> <p><span>The teacher had repeatedly claimed her healthy daughter suffered from cancer and needed urgent medical treatment, and had reportedly threatened her child with a knife.</span></p> <p><span>After Sofia’s death, police detained Lanskaya on a train heading towards Arctic port Murmansk. </span></p> <p><span>She confessed to carrying out the murder, said Russian law enforcement. </span></p> <p><span>Later in court, wearing military garments, she said, “I confessed because I'm very ill. I feel unwell, I don't have so long to live.”</span></p> <p><span>Despite her claim, investigators say there is no evidence she is terminally ill. </span></p> <p><span>During the court proceedings, Lanskaya admitted to inviting the girls to her flat “for tea”.</span></p> <p><span>She was covered in slash wounds and her head was “a broken, bloody mess”, reported Vologda-Poisk media.</span></p> <p><span>Sofia was reported missing and a huge police search started with 272 volunteers in Vologda city, with the girl’s mother Anna Zhavoronkova, 32, making an emotional appeal on social media. </span></p> <p><span>Police eventually located her friend after volunteers scanned CCTV footage and saw the girls together. </span></p> <p><span>The friend told them the address where she last saw Sofia, as police went to Lanskaya's house.</span></p> <p><span>Lanskaya was absent but police broke in and found Sofia’s body. </span></p> <p><span>Her throat had been slit and head battered with a blunt object, say police. </span></p> <p><span>A local said Lanskaya "is an intelligent woman, with an education" and </span><span>“she used to be a tutor in several foreign languages." </span></p> <p><span>She was remanded in custody for two months pending the murder investigation. </span></p> <p><span>At the funeral, hundreds of mourners carried flowers in the tragic girl's memory.</span></p> <p><span>A local report said, “People are silent, do not talk at all. Everyone is crying." </span></p> <p><span>“Even men, leaving the church, step aside, light a cigarette and wipe away their tears.”</span></p> <p><span>One weeping woman said she came because “my granddaughter is the same age”.</span></p> <p><em>Image credits: East2West/Australscope</em></p>

Legal

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Five of the best things to watch right now

<p><strong>From Bill Nighy in <em>Buckley’s Chance</em> to David Attenborough’s new documentary, Pamela Connellan brings you the scoop on the latest and greatest must-watch shows.</strong></p> <p><strong>1. Buckley’s Chance</strong></p> <p><strong>A new Australian film, starring well-known British actor, Bill Nighy, and set in the Australian outback, has just started showing in cinemas here. Called <em>Buckley’s Chance,</em> the film also stars Milan Burch, who plays the role of the young boy, Ridley, along with a new screen star – a dingo called Buckley.</strong></p> <p><iframe width="560" height="315" src="https://www.youtube.com/embed/4WGivlcmmrs" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen=""></iframe></p> <p><strong>After the loss of his father, Ridley is forced to move to the Australian outback to live with his estranged Grandfather (Nighy). During Ridley’s adventures, he becomes lost and befriends a dingo excluded from its own pack. A strong bond is formed as the two try to make their way home.</strong></p> <p>The film also stars beloved Australian actors Kelton Pell, Victoria Hill and Martin Sacks. <em>Buckley’s Chance</em> is a fascinating tale for all the family about fun, friendship and family, filmed on location in Broken Hill and the surrounding Australian outback.</p> <p>The film is directed by Canadian director Tim Brown (<em>Treasure Hounds, Devil in the Dark, Bite</em>) and produced by Brown with Gilbert Adler (<em>Valkyrie, Superman Returns, Constantine, House on Haunted Hill), </em>Scott Clayton <em>Guest House, The Driver, Joey and Ella)</em> and Andrew Mann (<em>Danger Close: Battle of Long Tan, Gold, The Chaperone).</em></p> <p><strong><em>Buckley’s Chance</em></strong><strong> is now showing in Australian cinemas…</strong></p> <p><strong>2. </strong><em><strong>A Perfect Planet</strong></em></p> <p><strong>Sit back and enjoy this new five-part documentary from David Attenborough</strong></p> <p><iframe width="560" height="315" src="https://www.youtube.com/embed/xxibm1ODEpI" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen=""></iframe></p> <p><strong>In this new five-part documentary from Sir David Attenborough – called </strong><em><strong>A Perfect Planet</strong></em><strong> - he explores the impact powerful natural forces have on the earth’s existence. He also looks at how the effect impending climate change will have on the earth in the future.</strong></p> <p>The documentary shows how life on planet earth flourishes as result of a perfect balance of a whole array of factors. Filming for the series took place over four years, across 31 countries, with crew navigating difficulties in extreme temperatures and remote locations. The series covers volcanoes, the sun, weather and oceans, with the final episode focusing on the human impact on the environment.</p> <p><em>A Perfect Planet</em> was shown on the BBC earlier this year to critical acclaim and it was one of the most popular programs on the BBC’s video on demand service, with the highest viewing figures in the platform's history.</p> <p>Reviewers praised the series, especially the content about weather and climate change as "perhaps the series' most dramatic scenes."</p> <p><strong><em>A Perfect Planet</em></strong><strong>, season 1, is </strong><a href="https://www.9now.com.au/"><strong>streaming now on 9Now</strong></a><strong> and new episodes are released on Saturdays at 7.30pm…</strong></p> <p><em><strong>3. </strong></em><em><strong>The Pact</strong></em><strong> – a story about five friends bound together by a fragile pact of silence – is now streaming on Stan</strong></p> <p><iframe width="560" height="315" src="https://www.youtube.com/embed/vggtMuD-Ehc" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen=""></iframe></p> <p><strong>An unexplained death and suddenly five friends are bound together by a fragile pact of silence. What really happened that night in the woods? The six-part thriller, </strong><em><strong>The Pact, </strong></em><strong>is now steaming on Stan.</strong></p> <p>When a young brewery boss is found dead, a chain of events is triggered that draws four of his employees; Anna (Laura Fraser; <em>Breaking Bad</em>), Nancy (Julie Hesmondhalgh; <em>The A Word, Broadchurch</em>), Louie (Eiry Thomas; <em>Keeping Faith</em>) and Cat (Heledd Gwynn; <em>Ordinary Lies</em>) into a fragile pact of silence, bound by a secret which will change their lives forever.</p> <p>Anna’s police officer husband, Max (Jason Hughes; <em>Three Girls</em>), investigates Jack’s (Aneurin Bernard; <em>Dunkirk</em>) unexpected death alongside his fierce superior DS Holland (Rakie Ayola; <em>Noughts + Crosses</em>), unaware that his own wife and her best friends are at the heart of a conspiracy. While brewery worker Tish (Abbie Hern; <em>The Twilight Zone</em>) becomes increasingly suspicious of her co-workers, Jack’s estranged father Arwel (Eddie Marsan; <em>Ray Donovan</em>) struggles to conceal dark family secrets.</p> <p>What really happened that fateful night? You’ll need to watch <em>The Pact</em> to find out but it’s clear, this is a gripping, contemporary thriller. Written and created by Pete McTighe who’s also worked on <em>Doctor Who, </em>this series comes with everything a thriller needs – mystery, intrigue and the elusive shock factor.</p> <p><em><strong>The Pact</strong></em><strong> is streaming now on Stan…</strong></p> <p><em><strong>4. </strong></em><em><strong>Wolfgang</strong></em><strong> – a documentary about the well-known chef – will stream soon on Disney+</strong></p> <p><iframe width="560" height="315" src="https://www.youtube.com/embed/xDlGkFoj1TY" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen=""></iframe></p> <p><em><strong>Wolfgang</strong></em><strong> is a documentary film which tells us the inspiring, true story of Wolfgang Puck, a man who survived a troubled childhood filled with a series of challenging obstacles but whose perseverance led him to become one of the most prolific chefs of our time and a household name.</strong></p> <p>From Emmy Award-winning director and producer, David Gelb, this is an inspiring and emotional film which is now streaming on Disney+.  As a teenager in Austria, Wolfgang Puck used his love of cooking to escape the harsh rule of his stepfather.</p> <p>A local apprenticeship allowed him to train at a revered French restaurant, before landing in America at the young age of 24.</p> <p>In the 70s in Hollywood, Puck began working at Ma Maison, crafting an original menu around fresh ingredients, making the once-tacky eatery a popular, acclaimed restaurant. Still, the lack of acknowledgement from Ma Maison’s owner pushed Puck to take the biggest risk of his career and open his own restaurant called Spago.</p> <p>Incorporating everything Puck knew about the restaurant trade, Spago was an instant hit and famous clientele came to enjoy his new American cuisine and his lively personality. Almost by accident, Puck created the concept of a ‘celebrity chef’ with his many television appearances. He built a global empire of restaurants, cafes and products for home cooks but at the same time, all of this hard work did take its toll on his family life and we see how this unfolds.</p> <p><em><strong>Wolfgang</strong></em><strong> will stream on </strong><a href="https://www.disneyplus.com/en-au"><strong>Disney+</strong></a><strong> on June 25th…</strong></p> <p><strong><em>5. </em></strong><strong>Spicks and Specks</strong><strong> has returned to our screens</strong></p> <p><strong>It’s been a long time – a whole decade in fact – since we've seen the very funny ABC TV music quiz show </strong><em><strong>Spicks and Specks</strong></em><strong> but luckily, the series has returned earlier this year for a brand new season!</strong></p> <p>Ten new episodes have been released every Sunday night. Everyone we know and love is returning including <strong>Adam Hills</strong> as the trivia master and <strong>Alan Brough</strong> and <strong>Myf Warhurst</strong> as the team leaders.</p> <p>As well, there’s a whole new range of guests making us laugh as they try to answer questions and sing songs for their team. Artists like <strong>Alice Skye</strong><strong>, </strong><strong>The Teskey Brothers</strong><strong>, </strong><strong>Vika &amp; Linda</strong> and <strong>Missy Higgins</strong> have all taken part. Plus comedians like <strong>Anne Edmonds</strong><strong>, </strong><strong>Nazeem Hussein</strong><strong>, </strong><strong>Luke McGregor</strong> and returning faves <strong>Dave O’Neil</strong> and <strong>Denise Scott</strong> are all onboard for the ride.</p> <p><em><strong>You can catch the new season of</strong></em><em><strong> Spicks and Specks</strong></em> <a href="https://iview.abc.net.au/?&amp;WT.srch=1&amp;WT.mc_id=Corp_TV%7cAdWords:%2Biview_b_g_339709145936_&amp;gclid=CjwKCAjwt8uGBhBAEiwAayu_9blDVROZfKeir8NyAsMUi78Fp4de3p04q6D0vBaDJX7EZNJnTU7f9RoCpQMQAvD_BwE&amp;gclsrc=aw.ds"><strong>on ABC iView...</strong></a></p>

Movies

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The Ocean Decade: how the next ten years can chart a new course for the blue planet

<p>When birdsong was filling the muted days of the first lockdown, marine scientists were noticing something similar in the world’s oceans. Container vessels, cruise ships and drilling platforms had fallen silent, and so the oceans grew quieter than at any other time in recent memory. Researchers are trying to understand how the lull affected ocean life, but there are already stories of whales seizing the chance to sing and dolphins venturing into coastal areas they’d avoided for decades.</p> <p>The year of the quiet ocean is over, and noise pollution is roaring back to pre-pandemic levels, drowning out the sounds that marine species depend on to communicate and make sense of their surroundings. Sadly, that’s just one problem among many.</p> <p>The UN has declared that the next ten years will be<span> </span><a href="https://www.oceandecade.org/">the Decade of Ocean Science for Sustainable Development</a>, recognising the enormous challenges facing our blue planet. The Conversation has been keeping an eye on some of these as part of our<span> </span><a href="https://theconversation.com/uk/topics/oceans-21-96784">Oceans 21 series</a>. Already, we’ve heard from experts about how chemical pollution in the ocean<span> </span><a href="https://theconversation.com/why-ocean-pollution-is-a-clear-danger-to-human-health-152641">threatens human health</a>, how the ocean economy is dominated by<span> </span><a href="https://theconversation.com/blue-economy-how-a-handful-of-companies-reap-most-of-the-benefits-in-multi-billion-ocean-industries-153165">a handful of mega-rich corporations</a><span> </span>and why global warming is<span> </span><a href="https://theconversation.com/the-ocean-is-becoming-more-stable-heres-why-that-might-not-be-a-good-thing-157911">making the ocean more stable</a><span> </span>– with surprisingly worrying results.</p> <p>But we’ve also heard informed reasons for hope. From the geographer studying<span> </span><a href="https://theconversation.com/the-hopeful-return-of-polar-whales-151487">the recovery of polar whale populations</a><span> </span>and the team of physicists learning how to track the journey of<span> </span><a href="https://theconversation.com/where-does-plastic-pollution-go-when-it-enters-the-ocean-155182">each plastic particle</a><span> </span>when it reaches the shoreline, to the anthropologist documenting the role that<span> </span><a href="https://theconversation.com/how-scottish-gaelic-is-helping-protect-scotlands-seas-155660">Scottish Gaelic plays in conservation</a><span> </span>in Outer Hebridean fisheries.</p>

Cruising

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Life on Venus? Traces of phosphine may be a sign of biological activity

<p>The discovery that the atmosphere of Venus absorbs a precise frequency of microwave radiation has just <a href="https://doi.org/10.1038/s41550-020-1174-4">turned planetary science on its head</a>. An international team of scientists used radio telescopes in Hawaii and Chile to find signs that the clouds on Earth’s neighbouring planet contain tiny quantities of a molecule called phosphine.</p> <p>Phosphine is a compound made from phosphorus and hydrogen, and on Earth its only natural source is tiny microbes that live in oxygen-free environments. It’s too early to say whether phosphine is also a sign of life on Venus – but no other explanation so far proposed seems to fit.</p> <p>This video shows how methane was detected in the atmosphere of Mars. The process is the same for finding phosphine on Venus.</p> <p><strong>What makes an atmosphere?</strong></p> <p>The molecular makeup of a planet’s atmosphere normally depends on what its parent star is made of, the planet’s position in its star’s system, and the chemical and geological processes that take place given these conditions.</p> <p>There is phosphine in the atmospheres of Jupiter and Saturn, for example, but there it’s not a sign of life. Scientists think it is formed in the deep atmosphere at high pressures and temperatures, then dredged into the upper atmosphere by a strong convection current.</p> <p><strong>Join 130,000 people who subscribe to free evidence-based news.</strong></p> <p>Although phosphine quickly breaks down into phosphorus and hydrogen in the top clouds of these planets, enough lingers – 4.8 parts per million – to be observable. The phosphorus may be what gives clouds on Jupiter a reddish tinge.</p> <p>Things are different on a rocky planet like Venus. The new research has found fainter traces of phosphine in the atmosphere, at 20 parts per billion.</p> <p>Lightning, clouds, volcanoes and meteorite impacts might all produce some phosphine, but not enough to counter the rapid destruction of the compound in Venus’s highly oxidising atmosphere. The researchers considered all the chemical processes they could think of on Venus, but none could explain the concentration of phosphine. What’s left?</p> <p>On Earth, phosphine is only produced by microbial life (and by various industrial processes) – and the concentration in our atmosphere is in the parts per trillion range. The much higher concentration on Venus cannot be ignored.</p> <p><strong>Signs of life?</strong></p> <p>To determine whether the phosphine on Venus is really produced by life, chemists and geologists will be trying to identify other reactions and processes that could be alternative explanations.</p> <p>Meanwhile, biologists will be trying to better understand the microbes that live in Venus-like conditions on Earth – high temperatures, high acidity, and high levels of carbon dioxide – and also ones that produce phosphine.</p> <p>When Earth microbes produce phosphine, they do it via an “anaerobic” process, which means it happens where no oxygen is present. It has been observed in places such as activated sludge and sewage treatment plants, but the exact collection of microbes and processes is not well understood.</p> <p>Biologists will also be trying to work out whether the microbes on Earth that produce phosphine could conceivably do it under the harsh Venusian conditions. If there is some biological process producing phosphine on Venus, it may be a form of “life” very different from what we know on Earth.</p> <p>Searches for life beyond Earth have often skipped over Venus, because its surface temperature is around 500℃ and the atmospheric pressure is almost 100 times greater than on Earth. Conditions are <a href="https://www.liebertpub.com/doi/10.1089/ast.2017.1783">more hospitable for life</a> as we know it about 50 kilometres off the ground, although there are still vast clouds of sulfuric acid to deal with.</p> <p><strong>Molecular barcodes</strong></p> <p>The researchers found the phosphine using spectroscopy, which is the study of how light interacts with molecules. When sunlight passes through Venus’s atmosphere, each molecule absorbs very specific colours of this light.</p> <p>Using telescopes on Earth, we can take this light and split it into a massive rainbow. Each type of molecule present in Venus’ atmosphere produces a distinctive pattern of dark absorption lines in this rainbow, like an identifying barcode.</p> <p>This barcode is not always strongest in visible light. Sometimes it can only be detected in the parts of the electromagnetic spectrum that are invisible to the human eye, such as UV rays, microwave, radio waves and infrared.</p> <p>The barcode of carbon dioxide, for example, is most evident in the infrared region of the spectrum.</p> <p>While phosphine on Jupiter was first detected in infrared, for Venus observations astronomers used radio telescopes: the <a href="https://www.almaobservatory.org/en/home/">Atacama Large Millimeter/submillimeter Array</a> (ALMA) and <a href="https://www.eaobservatory.org/jcmt/about-jcmt/">James Clerk Maxwell Telescope</a> (JCMT), which can detect the barcode of phosphine in millimetre wavelengths.</p> <p><strong>New barcodes, new discoveries</strong></p> <p>The discovery of phosphine on Venus relied not only on new observations, but also a more detailed knowledge of the compound’s barcode. Accurately predicting the barcode of phosphine across all relevant frequencies took <a href="http://www.tampa.phys.ucl.ac.uk/ftp/eThesis/ClaraSousaSilva2015.pdf">the whole PhD</a> of astrochemist Clara Sousa-Silva in the <a href="https://www.ucl.ac.uk/exoplanets/research/spectroscopy-exoplanets">ExoMol group</a> at University College London in 2015.</p> <p>She used computational quantum chemistry – basically putting her molecule into a computer and solving the equations that describe its behaviour – to predict the strength of the barcode at different colours. She then tuned her model using available experimental data before making the <a href="https://arxiv.org/abs/1410.2917">16.8 billion lines of phosphine’s barcode</a> available to astronomers.</p> <p>Sousa-Silva originally thought her data would be used to study Jupiter and Saturn, as well as weird stars and distant “hot Jupiter” exoplanets.</p> <p>More recently, she led the detailed consideration of <a href="https://arxiv.org/abs/1910.05224">phosphine as a biosignature</a> – a molecule whose presence implies life. This analysis demonstrated that, on small rocky exoplanets, phosphine should not be present in observable concentrations unless there was life there as well.</p> <p>But she no doubt wouldn’t have dreamed of a phone call from an astronomer who has discovered phosphine on our nearest planetary neighbour. With phosphine on Venus, we won’t be limited to speculating and looking for molecular barcodes. We will be able to send probes there and hunt for the microbes directly.</p> <p><em>Written by Laura McKemmish, UNSW; Brendan Paul Burns, UNSW, and Lucyna Kedziora-Chudczer, Swinburne University of Technology. Republished with permission of <a href="https://theconversation.com/life-on-venus-traces-of-phosphine-may-be-a-sign-of-biological-activity-146093">The Conversation.</a> </em></p>

Art

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Is the dress green or red? Planet-friendly couture won’t be for everyone but it can lead the way

<p>Hollywood legend Jane Fonda hit the 92nd Academy Awards ceremony stage this week in a beaded red dress by Elie Saab – a gown she had <a href="https://www.buzzfeed.com/mjs538/jane-fonda-wore-the-same-oscar-dress-she-wore-7-ye">previously worn at Cannes in 2014</a>.</p> <p><a href="http://www.bafta.org/film/news/ee-rising-star-award-in-2020">Rising star</a> Kaitlyn Dever walked the Oscars red carpet in a deep scarlet Louis Vuitton dress she told reporters was “<a href="https://www.teenvogue.com/story/kaitlyn-dever-oscars-2020">completely sustainable</a>” thanks to fibre technology.</p> <p>Two very different fashion approaches towards saving the planet – but how effective are they at mitigating the environmental impact of fashion? The first comes from an activist trying to be more sustainable, the second from a designer label making production changes.</p> <p><strong>Size of the problem</strong></p> <p>The fashion industry creates in <a href="https://truecostmovie.com/learn-more/environmental-impact">excess of 80 billion pieces</a> of clothing a year and is responsible for <a href="https://www.unece.org/info/media/presscurrent-press-h/forestry-and-timber/2018/un-alliance-aims-to-put-fashion-on-path-to-sustainability/doc.html">10% of global carbon emissions</a>.</p> <p>Chemical dyes in fashion create <a href="https://www.unece.org/info/media/presscurrent-press-h/forestry-and-timber/2018/un-alliance-aims-to-put-fashion-on-path-to-sustainability/doc.html">20% of global waste water</a> and crops such as cotton use <a href="https://www.unece.org/info/media/news/forestry-and-timber/2018/fashion-is-an-environmental-and-social-emergency-but-can-also-drive-progress-towards-the-sustainable-development-goals/doc.html">24% of global insecticides</a>.</p> <p>Microfibers and micro plastics from laundered garments have contaminated our <a href="https://pubs.acs.org/doi/abs/10.1021/es201811s">beaches</a>, <a href="https://orbmedia.org/stories/Invisibles_plastics">bottled drinking water</a>, and <a href="https://www.semanticscholar.org/paper/Microplastics-in-aquatic-food-chain-%3A-sources%2C-and-Hollman-Bouwmeester/e4eb91427fafd7953d17ad6fca9352ae362039f1">aquatic food chain</a>.</p> <p>Fast fashion promotes the reckless over-production and over-consumption of cheaply made clothing, and is reliant on <a href="https://www.unenvironment.org/news-and-stories/press-release/un-alliance-sustainable-fashion-addresses-damage-fast-fashion">exploiting inexpensive labour</a>.</p> <p>Less than 1% of fabrics can be <a href="https://www.ellenmacarthurfoundation.org/assets/downloads/A-New-Textiles-Economy.pdf">recycled</a> and fibre-to-fibre recycling technology is still in its infancy, without the infrastructure to address the vast amount of garments produced.</p> <p><strong>A ‘completely sustainable’ dress?</strong></p> <p>Dever’s dress was made from a material called “Tencel Luxe”, with lyocell fibre created from sustainably-grown trees. The wood is cut into tiny pieces, dissolved in a solvent and extruded into a soft cellulose fibre.</p> <p>This process was first developed in 1972 to create a cheap cotton substitute, often blended into cotton and polyester in inexpensive fabrics. Over time, lyocell improved to make a fabric more appropriate for luxury products.</p> <p>The sustainability of the fabric has also improved significantly. Today, 99% of the solvent used in the manufacturing process is recyclable. The fabric itself has the same challenges as cotton when <a href="https://www.sciencedirect.com/science/article/pii/B978008102041800007X">it comes to recycling</a>. The length of the fibres break down and shortens over time, lowering the quality when recycled into new fabrics – unless virgin material is added.</p> <p>Indeed, lyocell fabric is far from perfect, and requires a large amount of energy in its production. Just substituting one material for another does not solve sustainability problems.</p> <p>Dever’s dress was made over <a href="https://www.latimes.com/lifestyle/story/2020-02-09/oscars-2020-red-carpet-green-dress?_amp=true">1,900 hours</a> by a team of artisans with 14,400 Swarovski crystals and glass beads. A gown this opulent uses so much material, energy and labour that its carbon footprint becomes excessive.</p> <p>The sustainability measure of a garment must include how it is recycled after its life. At present, some cutting edge <a href="https://www.blocktexx.com/News/Recycling-International">fibre-to-fibre recycling</a> technologies exist but Louis Vuitton is yet to offer recycling services.</p> <p>The Louis Vuitton group hosts the <a href="https://vivatechnology.com/partners/lvmh/">Viva Tech Conference</a> for exhibitors working on sustainable concepts to showcase their developments. It is encouraging that the company’s chairman and chief executive Bernard Arnault <a href="https://r.lvmh-static.com/uploads/2019/09/lvmh__ra_environnement_2018_gb-1.pdf">believes</a>“sustainable, globalised growth is possible” and a priority for the company.</p> <p><strong>A second outing</strong></p> <p>With her commitment to climate change activism, Fonda has said she will <a href="https://www.hollywoodreporter.com/news/why-jane-fonda-keeps-wearing-red-coat-getting-arrested-1252315">no longer buy new clothing</a>.</p> <p>In a world that demands novelty, Fonda’s bold act of choosing an old gown that tastefully fits into today’s trends truly brings “vintage” clothing to the red carpet.</p> <p>Fonda used her celebrity influence to turn a dress on the red carpet into a political symbol.</p> <p>Her <a href="https://www.marieclaire.com.au/jane-fonda-fire-drill-fridays-explained">vow</a> not to buy new clothing was <a href="https://www.theguardian.com/film/2019/dec/06/jane-fonda-joining-climate-fight-greta-thunberg-trump">inspired</a> by teenage activist Greta Thunberg, who Fonda said showed that we can’t just “go about our business” in the face of a climate emergency.</p> <p>No stranger to being <a href="https://www.theguardian.com/film/2019/dec/06/jane-fonda-joining-climate-fight-greta-thunberg-trump">arrested</a>, Fonda’s real world activism is the type needed to change government policies in ways that reign in the fashion industry.</p> <p>Activists can petition governments, watch over corporations and form grassroots community groups to organise change. Celebrities who straddle the red carpet and the picket line such as Jane Fonda (or Emma Thompson for Extinction Rebellion) are key to a sustainable fashion industry.</p> <p><strong>Think before you shop</strong></p> <p>It is inspiring to see these two stars’ dresses become talking points.</p> <p>It shows the public’s growing awareness of climate change and their willingness to change their behaviour to make a difference. The fashion industry will determine significant aspects of the future of our environment and the lives of over 40 million workers around the world.</p> <p>From developing new green technology to changing consumer consumption behaviour and outlawing exploitative labour practices that make fast fashion possible, we are still a long way from a “completely sustainable” industry.</p> <p>Corporations will need to evolve and adapt to customers who demand sustainability. They will have to offer services that recycle garments after they have been used, and embrace recycled materials. Celebrities bring these issues to the public and give them steps they can take right now.</p> <p>When asked by a reporter about what people could do right now to be more sustainable, <a href="https://www.youtube.com/watch?v=W70vbDdC2cc">Dever said</a>, “it’s just a matter of letting it be a part of your lifestyle”.</p> <p><em>With fashion, I think you can think a little before you buy something brand new, and I think can also support vintage – I think that’s really, really important. And also look into the brands you’re supporting.</em></p> <p>This is a great starting point which hopefully continues into a deeper conversation about how far we yet have to go.</p> <p><em>Written by Mark Liu. Republished with permission of </em><a href="https://theconversation.com/is-the-dress-green-or-red-planet-friendly-couture-wont-be-for-everyone-but-it-can-lead-the-way-131469"><em>The Conversation</em></a><em>.</em></p> <p><em> </em></p> <p> </p>

Beauty & Style

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How streaming music could be harming the planet

<p><span style="font-weight: 400;">Two professors at the University of Oslo have concluded that music streaming has had more of a negative impact on the environment than purchasing a physical product (such as a C.D).</span></p> <p><span style="font-weight: 400;">The study was on the economic and environmental costs of the music industry since the 1970s</span></p> <p><span style="font-weight: 400;">“Intuitively you might think that less physical product means far lower carbon emissions. Unfortunately, this is not the case,” Kyle Devine, an associate at the University of Oslo says.</span></p> <p><span style="font-weight: 400;">Despite the decline in CDs, which has fallen 18.5 per cent since last year, the decline doesn’t offset the environmental cost of maintaining streaming services, such as YouTube, Spotify, Apple Music and Pandora.</span></p> <p><span style="font-weight: 400;">As streaming services utilise large amounts of computing power, servers, storage and cloud capabilities, the increased power usage means more greenhouse gas emissions (GHGs).</span></p> <p><span style="font-weight: 400;">Devine calculated that 140 million kilograms of GHGs were emitted in 1977, which was calculated by converting past plastic production to emissions.</span></p> <p><span style="font-weight: 400;">Using the same formula, it was discovered that the recorded music industry emitted between 200 million and 350 million kg of GHGs in 2016.</span></p> <p><span style="font-weight: 400;">Devine revealed to </span><a href="https://www.express.co.uk/news/science/1120086/Climate-change-plastic-CD-listen-music-global-warming-study-Spotify-Apple-Amazon"><span style="font-weight: 400;">Express</span></a><span style="font-weight: 400;"> that he was surprised by the results.</span></p> <p><span style="font-weight: 400;">“I am a bit surprised. The hidden environmental cost of music consumption is enormous.”</span></p> <p><span style="font-weight: 400;"> He reveals more in his book </span><span style="font-weight: 400;">Decomposed: The Political Ecology of Music.</span><span style="font-weight: 400;"> A brief summary of the book reads:</span></p> <p><span style="font-weight: 400;">“Today, recordings exist as data-based audio files. Devine describes the people who harvest and process these materials, from women and children in the Global South to scientists and industrialists in the Global North.</span></p> <p><span style="font-weight: 400;">“He reminds us that vinyl records are oil products, and that the so-called vinyl revival is part of petrocapitalism.</span></p> <p><span style="font-weight: 400;">“The supposed immateriality of music as data is belied by the energy required to power the internet and the devices required to access music online.</span></p> <p><span style="font-weight: 400;">“We tend to think of the recordings we buy as finished products. Devine offers an essential backstory.”</span></p>

Music