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Summer’s over, so how much sun can (and should) I get?

<a href="https://theconversation.com/profiles/katie-lee-228942">Katie Lee</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/rachel-neale-891731">Rachel Neale</a>, <a href="https://theconversation.com/institutions/qimr-berghofer-medical-research-institute-1811">QIMR Berghofer Medical Research Institute</a> As we slide of out summer, you might be wondering how careful you need to be about sun exposure. Excessive exposure causes <a href="https://www.cancer.org.au/about-us/policy-and-advocacy/prevention-policy/national-cancer-prevention-policy/skin-cancer-statistics-and-issues/uv-radiation">skin cancer</a>, but sun exposure also has <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">benefits</a>. How do you balance the two? A new <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">position statement</a> from cancer, bone health and other experts <a href="https://www.assc.org.au/wp-content/uploads/2023/01/Sun-Exposure-Summit-PositionStatement_V1.9.pdf">aims to help</a> Australians balance the good and bad effects of sun exposure by taking into account their skin colour, risk of skin cancer, and where they live. <h2>What are the benefits of sunlight?</h2> Ultraviolet (UV) radiation (the wavelengths in sunlight that cause skin cancer) also leads to vitamin D production. <a href="https://dermnetnz.org/topics/vitamin-d">Vitamin D</a> is very important for maintaining strong bones, and is likely to have <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">multiple other health benefits</a>. But vitamin D probably isn’t the whole story. Sunshine, including UV radiation, is thought to affect health in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">other ways</a> such as improving our mood and reducing the risk of autoimmune diseases and infections. So for many people, avoiding the sun and taking a vitamin D supplement may not be the best approach. <h2>How much time does it take to make vitamin D?</h2> It’s complicated, but for most people and most of the year across most of Australia, it’s a lot less than you think. The <a href="https://onlinelibrary.wiley.com/doi/10.1111/php.13854">amount of time needed</a> depends on the amount of skin covered by clothing and the intensity of UV radiation (indicated by the UV index). More skin exposed and higher UV index equate to less time needed. Both the UV index and the amount of the year that UV radiation is high increase as you get closer to the equator. In summer, all of Australia is bathed in sunshine. But in winter, opposite ends of the country have <a href="https://onlinelibrary.wiley.com/doi/10.1111/php.13854">very different exposures</a>. In summer, everybody except those with deeply pigmented skin can make enough vitamin D in <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">just five minutes</a> between 9am and 3pm, anywhere in Australia, provided they are wearing shorts and a T-shirt. In winter it’s a different story. In <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">Darwin and Brisbane</a>, 5–10 minutes between 10am and 3pm will do the trick, but in <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">Hobart</a>, factoring in winter clothing, it will take nearly an hour in the middle of the day. Hover your mouse over the lines below to see the length of exposure needed at specific times of day. <iframe id="X5szQ" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/X5szQ/" width="100%" height="400px" frameborder="0"></iframe> Staying out for longer than needed doesn’t necessarily make more vitamin D, but it <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub#bib25">does cause skin damage</a>. <h2>Hang on, what about those with darker skin?</h2> People with deeply pigmented, brown to black skin accumulate both vitamin D and DNA damage at a much slower rate than people with lighter skin tones. When UV radiation hits a DNA strand, it causes the DNA to become distorted. If the distortion isn’t fixed, it will cause a mistake when the DNA is copied for a new cell, causing a permanent mutation that sometimes leads to cancer. Melanin, the brown pigment in the skin, absorbs UV photons before that can happen, and the high melanin content in the darkest skin tones provides <a href="https://faseb.onlinelibrary.wiley.com/doi/full/10.1096/fj.201701472R">60 times</a> as much UV protection as the small amount in very fair skin. The flip side is the risk of vitamin D deficiency is much higher than the risk of skin cancer. The new statement accounts for this by putting people into <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">three groups</a> based on their risk of skin cancer, with specialised advice for each group. <h2>Highest skin cancer risk</h2> This includes people with very pale skin that burns easily and tans minimally, but also people with darker white or olive skin who can tan easily but have extra skin cancer risk factors because they: <ul> <li>have had skin cancer before</li> <li>have a family history of melanomas</li> <li>have many moles</li> <li>are taking immunosuppressant medications.</li> </ul> For these people, the harms of sun exposure almost certainly <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">outweigh the benefits</a>. These people should wear sunscreen every day the <a href="https://www.arpansa.gov.au/our-services/monitoring/ultraviolet-radiation-monitoring/ultraviolet-radiation-index">UV index</a> is forecast to get to <a href="https://www.assc.org.au/peak-health-bodies-recommend-new-approach-to-sunscreen-use/">three or more</a>, and use the <a href="https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/be-sunsmart">five sunsmart steps</a> whenever the UV index is above three: <ul> <li>slip on clothing covering as much of the body as possible</li> <li>slop on SPF30+ sunscreen on areas that can’t be covered up</li> <li>slap on a hat</li> <li>seek shade</li> <li>slide on sunglasses.</li> </ul> They shouldn’t spend time outdoors deliberately to make vitamin D, but should discuss vitamin D supplements with their doctor. <h2>Intermediate skin cancer risk</h2> This means people with dark white/olive skin that sometimes burns but tans easily, and who don’t have other skin cancer risk factors. These people should still apply sunscreen as part of their usual routine on all days when the UV index is forecast to get to <a href="https://www.assc.org.au/peak-health-bodies-recommend-new-approach-to-sunscreen-use/">three or more</a>, but they can spend enough time outdoors to get a “dose” of vitamin D on most days of the week. Once the time needed for their vitamin D dose is up, they should also use the <a href="https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/be-sunsmart">slip-slop-slap-seek-slide</a> steps to avoid accumulating DNA damage. If they’re unable to do this because of health or lifestyle factors, like being housebound, working night shifts, or always covering up with clothing, they should see their doctor about whether they need vitamin D supplements. <h2>Lowest skin cancer risk</h2> This covers people with deeply pigmented brown to black skin that rarely or never burns. These people can <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub#bib14">safely spend enough time outdoors</a> to make vitamin D and get the other benefits of sunshine. But because more time is needed, it can be difficult, particularly when the weather is cold. Vitamin D supplements might be needed. They don’t need to routinely protect their skin, but might need to <a href="https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/be-sunsmart">slip-slop-slap-seek-slide</a> if they are outdoors for more than two hours. <h2>How do I get the feel-good effects of sunshine?</h2> Spending time outdoors in the early morning is the best way to get the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">feel-good effects</a> of sunshine. An early morning walk is a great idea for all of us, but it won’t make vitamin D.<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/224144/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/katie-lee-228942">Katie Lee</a>, PhD Candidate, Dermatology Research Centre, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/rachel-neale-891731">Rachel Neale</a>, Principal research fellow, <a href="https://theconversation.com/institutions/qimr-berghofer-medical-research-institute-1811">QIMR Berghofer Medical Research Institute</a> Image credits: Getty Images 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/summers-over-so-how-much-sun-can-and-should-i-get-224144">original article</a>.

Body

Britney Spears’ memoir is a reminder of the stigma and potential damage of child stardom

<a href="https://theconversation.com/profiles/jane-oconnor-1483447">Jane O’Connor</a>, <a href="https://theconversation.com/institutions/birmingham-city-university-920">Birmingham City University</a> Britney Spears’ new memoir, The Woman in Me, illustrates once again the potential lifelong damage that can be caused by being a child star. Like many before her, including <a href="https://www.britannica.com/biography/Judy-Garland">Judy Garland</a> and <a href="https://www.britannica.com/biography/Michael-Jackson">Michael Jackson</a>, Spears was ushered into the dangerous terrain of childhood fame by the adults who were supposed to be protecting her, and was utterly unprepared to deal with the fallout. Spears’ <a href="https://www.bbc.co.uk/news/world-us-canada-53494405">father’s conservatorship</a>, controlling every aspect of her personal and professional life, was finally rescinded in 2021. She is now able to share the details of her extraordinary years in the limelight and beyond. From a sociological perspective, childhood is considered socially constructed. This means that there are specific ways of raising children which are socially and culturally defined. We discard these conventions surrounding the early years of life at our peril. The boundaries and rules around what is and is not acceptable during childhood, and the normal activities and institutions that shape the experience of being a child have developed over the centuries for a reason – to try and keep children safe from the harsh realities of the adult world. Being sexualised and valued for your appearance, being paid to work, having to deal with criticism and unwanted attention from strangers – these are all difficult aspects of growing up. Children and teens need careful support and guidance if they are to navigate safely into their adult lives and identities. The experience of childhood fame throws aside this social safety net for children in every possible way, and the consequences can be disastrous. <h2>The price of child fame</h2> From the earliest child stars of Hollywood’s golden age, through the television sitcoms and shows of the mid-20th century, the rise of the pop and film industries in the following decades and the burst in popularity of reality TV and talent shows of the early 21st century, <a href="https://www.tandfonline.com/doi/abs/10.1080/17482798.2011.584378">children have always featured</a>. Many have paid a heavy price for their often short period of fame. Sad stories of <a href="https://www.or-nc.com/why-do-child-stars-become-addicted-to-drugs/">drug and alcohol addiction</a>, <a href="https://www.hitc.com/en-gb/2022/11/02/uncle-fester-star-jackie-coogans-tragic-life-child-fortune-to-horror-crash">family disputes</a>, <a href="https://www.ranker.com/list/child-actors-who-became-criminals/nathan-gibso">criminal activity</a> and <a href="https://www.dailystar.co.uk/showbiz/us-showbiz/former-nickelodeon-star-drake-bells-29769568">toxic relationships</a> are frequently reported by the media. These reinforce the stereotypical “child star gone bad” and “too much too young” narratives that the wider public has come to expect. For example, stories abound of <a href="https://metro.co.uk/2020/02/11/macaulay-culkin-reveals-never-divorced-parents-emancipated-12222457/">Macaulay Culkin “divorcing” his controlling parents</a> and his difficulties transitioning into adult life, <a href="https://www.belfasttelegraph.co.uk/entertainment/film-tv/why-it-was-not-a-wonderful-life-for-macaulay-culkin-after-he-found-fame-in-the-hit-christmas-film-home-alone/37620091.html">feeling trapped</a> in the image of boyhood innocence of his most famous character, Kevin in the Home Alone movies. <a href="https://books.google.co.uk/books?id=kSJ8XjTw10kC&printsec=frontcover&redir_esc=y#v=onepage&q&f=false">In her autobiography</a> actor Drew Barrymore has written about her casual acceptance at Hollywood parties and consumption of alcohol at a very young age, following her role in <a href="https://www.imdb.com/title/tt0083866/">E.T.</a> (1982) aged five. There is also the tragic life and death of <a href="https://www.theguardian.com/tv-and-radio/2010/may/29/gary-coleman-obituary">Gary Coleman</a>, cute kid star of the American sitcom <a href="https://www.imdb.com/title/tt0077003/">Diff'rent Strokes</a> (1978-1986). Coleman, who died at 42 following a history of <a href="https://nypost.com/2010/05/29/troubled-80s-child-star-gary-colemans-life-is-cut-short-at-42/#:%7E:text=In%202005%2C%20Coleman%20moved%20to,and%20%22wanted%20to%20die.%22">substance abuse</a> and <a href="https://www.salon.com/2010/05/28/gary_coleman_dies/">depression</a>, reported being <a href="https://www.theguardian.com/tv-and-radio/2010/may/29/gary-coleman-obituary">deeply humiliated</a> by people asking: “Didn’t you used to be …?” when he was working as a security guard at a supermarket as an adult. <h2>Other possibilities</h2> It’s important to note, however, that a difficult trajectory is not the experience of all child stars and former child stars. The actors from the Harry Potter films, for example, seem <a href="https://www.theguardian.com/film/2021/oct/22/the-not-so-cursed-child-did-harry-potter-mark-the-end-of-troubled-young-actors">largely to have transitioned well</a> into adult lives and careers – some in the spotlight, others not. And the new generation of famous children and teens such as <a href="https://www.gq.com/story/stranger-things-millie-bobby-brown">Millie Bobby Brown</a>, star of the Netflix show <a href="https://theconversation.com/stranger-things-is-the-upside-down-to-disneys-cute-and-cuddly-universe-83417">Stranger Things</a> (2016-present), seem more prepared for fame than their predecessors, in control of their images and identities via their own social media platforms and <a href="https://www.bbc.co.uk/news/world-44045291">potentially protected to some extent</a> from extreme sexualisation by the MeToo movement. Even so, Brown <a href="https://www.popbuzz.com/tv-film/news/millie-bobby-brown-birthday-instagram-post/">commented on her 16th birthday</a> that: “There are moments I get frustrated from the inaccuracy, inappropriate comments, sexualization, and unnecessary insults.” For Spears though, these were more than moments. She details in her memoir how the constant public scrutiny of her body and physical appearance, being valued for her sexuality and treated as a commodity have characterised her entire life. It is no wonder <a href="https://people.com/britney-spears-reveals-why-shaved-off-hair-in-2007-exclusive-8362494">she shaved her head</a> in 2007, a move interpreted by the media as her having “gone mad”, but in fact a powerful indication of her anger at being perceived as nothing more than a dancing sex-doll. As she writes in her memoir: "I knew a lot of guys thought long hair was hot. Shaving my head was a way of saying to the world: fuck you. You want me to be pretty for you? Fuck you. You want me to be good for you? Fuck you. You want me to be your dream girl? Fuck you." The sociologist Erving Goffman wrote about the stigma of having a “<a href="https://www.howcommunicationworks.com/blog/2020/12/16/what-is-stigma-explaining-goffmans-idea-of-spoiled-identity">spoiled identity</a>” whereby people carry with them the public shame of transgression or physical difference. Being a former child star can be stigmatising for many reasons, including being constantly compared to an ideal younger version of yourself and not having had a “normal” childhood or conventional family relationships. In this memoir, Britney attempts to face down that stigma and reclaim her identity and person-hood as an adult. In doing so, she demonstrates that it can be possible to leave the dangerous terrain of early fame behind – but the journey is a tough one. <a href="https://theconversation.com/profiles/jane-oconnor-1483447">Jane O’Connor</a>, Reader in Childhood Studies, <a href="https://theconversation.com/institutions/birmingham-city-university-920">Birmingham City University</a> Image credits: Getty Images / Instagram, 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/britney-spears-memoir-is-a-reminder-of-the-stigma-and-potential-damage-of-child-stardom-216545">original article</a>.

Music

Tourist accused of causing over $8,000 in damages to iconic Roman statue

A 22-year-old German tourist has been accused of causing around €5,000 (A$8,400) in damages to the 16th-century Fountain of Neptune in the Piazza della Signoria, Italy. Surveillance footage obtained by the police allegedly show the tourist - who has not been named - climbing over the protective barrier around the monument in the early hours of Monday morning as he posed for a photo on the statue. His two friends, who stood outside of the barrier, took the photos of him and they all fled the scene when the alarm went off, according to city authorities. "According to the investigators' reconstruction, after 1 o'clock this morning the tourist, in Piazza della Signoria with two other friends, climbed over the fence of the Neptune Fountain and climbed onto the edge of the pool," the statement read. "With a jump he then climbed onto the horse's leg, reaching the base of the carriage and, after having some photos taken by his friends, he climbed down," they added. "During the descent he placed his foot again on the hoof, damaging it. As soon as the alarm went off, however, the young man had already managed to escape with the two others." The tourist will be charged under the city penal code that prohibits the "destruction, dispersion, deterioration, disfigurement, soiling or illicit use of cultural or landscape assets." He has been detained in Florence and could be fined and banned from entering the city if convicted. Image: X (formerly Twitter)

Travel Trouble

Zoo's upright bear accused of being just a guy in a suit

A Chinese zoo has had to be completely trans-bear-ant about its popular sun bear, following allegations that it was actually a human in disguise. The Hangzhou Zoo in China gained international recognition after video footage of their sun bear standing on its hind legs and waving at visitors caused many to paws and look twice. Many were bear-side themselves with excitement as theories that it was a human in disguise continued to spread. The local Hangzhou Daily first reported on the attention that the four-year-old sun bear named Angela was receiving. “Because of the way they stand, some people online question whether they are ‘humans in disguise’,” they wrote. As Angela gained popularity, experts were summoned and had to confirm that the bear was in fact fur-real. Ashleigh Marshall, an expert from Chester Zoo, told BBC News that the animal “is definitely a real bear,” and affirmed to doubtful visitors that sun bears do often “look a lot like people in costumes”. The animal expert also pointed out that the folds on the sun bear’s back weren’t because the costume was loose, but its actual function is to protect the bear from predators and allow them to “turn around” and fight back if attacked. Various representatives of the zoo have had to come out and release statements addressing the controversy. A spokesperson has reportedly said that the state-run facility would never intentionally deceive people, in an audio clip circulating on popular Chinese social media platform WeChat. “Some people think I stand like a person,” read another social media post, written from the point of view of the bear. “It seems you don't understand me very well.” Another spokesperson for the zoo has also denied the allegations and said that a human in a fur bear suit “would not last more than a few minutes before collapsing” in the 40°C summer temperatures. Images: Twitter / WeChat

International Travel

5 surprising factors damaging your heart

It’s important to maintain heart health at all stages of life, but it becomes particularly crucial as we age – after all, the older you get, the older your heart becomes, too. And even though you might be taking all the right precautions (e.g. quitting smoking, eating a healthy diet, exercising regularly), you could be tarnishing your ticker without even realising it. Here are five things you didn’t know could negatively affect your heart health. 1. Damaged hearing – if you’ve spent much of your life working or living in noisy areas or regularly attending loud events (i.e. those rock concerts you frequented back in the day!), beware. A 2015 study found that people with high-frequency hearing loss in both years (most often due to prolonged exposure to high-decibel noise) were twice as prone to heart disease than those with normal hearing. 2. Air pollution – Have you been considering a sea or tree change? Now might be the time to do it. Researchers in 2011 discovered that exposure to traffic and air pollution is responsible for between 5 and 7 per cent of heart attacks around the world. Experts believe this may be due to an increase in arterial plaque build-up experienced by city-dwellers. 3. Sleep deprivation – A chronic lack of sleep increases production of adrenaline and cortisol (the stress hormone), which in turn increases your heart rate and blood pressure. In fact, one study found those who regularly had less than five hours of sleep were three times more at risk of heart attack than those who got between six and eight hours. 4. Excessive exercise – Believe it or not, but exercise could be putting you at risk of a heart attack – that is, if you’re doing too much vigorous exercise too often. Anything that causes strain can lead to dangerously high blood pressure – this means weightlifting and endurance sports (e.g. marathons) could be off the table. Stick to low-impact workouts like brisk walking, light weights and yoga. 5. Too much sitting – We’ve heard it all before – that sitting is bad for you – but you might not have realised just how bad it can be. According to a 2015 report, the average adult spends more than half of their waking hours sitting down, making them more likely to suffer or die from heart disease –even those who exercised an hour a day couldn’t combat this higher risk. Images: Getty

Body

Arctic Ocean could be ice-free in summer by 2030s, say scientists – this would have global, damaging and dangerous consequences

<a href="https://theconversation.com/profiles/jonathan-bamber-102567">Jonathan Bamber</a>, <a href="https://theconversation.com/institutions/university-of-bristol-1211">University of Bristol</a> The Arctic Ocean could be ice-free in summer by the 2030s, even if we do a good job of reducing emissions between now and then. That’s the worrying conclusion of a new study in <a href="https://www.nature.com/articles/s41467-023-38511-8">Nature Communications</a>. Predictions of an ice-free Arctic Ocean have a long and complicated history, and the 2030s is sooner than most scientists had thought possible (though it is later than some had wrongly forecast). What we know for sure is the disappearance of sea ice at the top of the world would not only be an emblematic sign of climate breakdown, but it would have global, damaging and dangerous consequences. The Arctic has been experiencing climate heating <a href="https://theconversation.com/arctic-is-warming-nearly-four-times-faster-than-the-rest-of-the-world-new-research-188474">faster than any other part of the planet</a>. As it is at the frontline of climate change, the eyes of many scientists and local indigenous people have been on the sea ice that covers much of the Arctic Ocean in winter. This thin film of frozen seawater expands and contracts with the seasons, reaching a minimum area in September each year. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=184&fit=crop&dpr=1 600w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=184&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=184&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=232&fit=crop&dpr=1 754w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=232&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=232&fit=crop&dpr=3 2262w" alt="Animation of Arctic sea ice from space" /></a><figcaption>Arctic sea ice grows until March and then shrinks until September. <a class="source" href="https://www.nasa.gov/feature/esnt/2022/nasa-finds-2022-arctic-winter-sea-ice-10th-lowest-on-record">NASA</a></figcaption></figure> The ice which remains at the end of summer is called multiyear sea ice and is considerably thicker than its seasonal counterpart. It acts as barrier to the transfer of both moisture and heat between the ocean and atmosphere. Over the past 40 years this multiyear sea ice has shrunk from around <a href="http://polarportal.dk/en/sea-ice-and-icebergs/sea-ice-extent0/">7 million sq km to 4 million</a>. That is a loss equivalent to roughly the size of India or 12 UKs. In other words, it’s a big signal, one of the most stark and dramatic signs of fundamental change to the climate system anywhere in the world. As a consequence, there has been considerable effort invested in determining when the Arctic Ocean might first become ice-free in summer, sometimes called a “blue ocean event” and defined as when the sea ice area drops below 1 million sq kms. This threshold is used mainly because older, thicker ice along parts of Canada and northern Greenland is expected to remain long after the rest of the Arctic Ocean is ice-free. We can’t put an exact date on the last blue ocean event, but one in the near future would likely mean open water at the North Pole for the first time in <a href="https://www.nature.com/articles/nature10581">thousands of years</a>. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=712&fit=crop&dpr=1 600w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=712&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=712&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=895&fit=crop&dpr=1 754w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=895&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=895&fit=crop&dpr=3 2262w" alt="Annotated map of Arctic" /></a><figcaption>The thickest ice (highlighted in pink) is likely to remain even if the North Pole is ice-free. <a class="source" href="https://nsidc.org/arcticseaicenews/2015/05/new-tools-for-sea-ice-thickness/">NERC Center for Polar Observation and Modelling</a>, <a class="license" href="http://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA</a></figcaption></figure> One problem with predicting when this might occur is that sea ice is notoriously difficult to model because it is influenced by both atmospheric and oceanic circulation as well as the flow of heat between these two parts of the climate system. That means that the climate models – powerful computer programs used to simulate the environment – need to get all of these components right to be able to accurately predict changes in sea ice extent. <h2>Melting faster than models predicted</h2> Back in the 2000s, an assessment of early generations of climate models found they generally <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007GL029703">underpredicted the loss of sea ice</a> when compared to satellite data showing what actually happened. The models predicted a loss of about 2.5% per decade, while the observations were closer to 8%. The next generation of models did better but were <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2012GL052676">still not matching observations</a> which, at that time were suggesting a blue ocean event would happen by mid-century. Indeed, the latest <a href="https://www.ipcc.ch/report/sixth-assessment-report-working-group-i/">IPCC climate science report</a>, published in 2021, reaches a similar conclusion about the timing of an ice-free Arctic Ocean. As a consequence of the problems with the climate models, some scientists have attempted to extrapolate the observational record resulting in the controversial and, ultimately, incorrect assertion that this would happen <a href="https://www.theguardian.com/environment/2016/aug/21/arctic-will-be-ice-free-in-summer-next-year">during the mid 2010s</a>. This did not help the credibility of the scientific community and its ability to make reliable projections. <h2>Ice-free by 2030?</h2> The scientists behind the latest study have taken a different approach by, in effect, calibrating the models with the observations and then using this calibrated solution to project sea ice decline. This makes a lot of sense, because it reduces the effect of small biases in the climate models that can in turn bias the sea ice projections. They call these “observationally constrained” projections and find that the Arctic could become ice-free in summer as early as 2030, even if we do a good job of reducing emissions between now and then. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=394&fit=crop&dpr=1 600w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=394&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=394&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=495&fit=crop&dpr=1 754w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=495&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=495&fit=crop&dpr=3 2262w" alt="Walruses on ice floe" /></a><figcaption>Walruses depend on sea ice. As it melts, they’re being forced onto land. outdoorsman / shutterstock</figcaption></figure> There is still plenty of uncertainty around the exact date – about <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016GL070067">20 years or so</a> – because of natural chaotic fluctuations in the climate system. But compared to previous research, the new study still brings forward the most likely timing of a blue ocean event by about a decade. <h2>Why this matters</h2> You might be asking the question: so what? Other than some polar bears not being able to hunt in the same way, why does it matter? Perhaps there are even benefits as the previous US secretary of state, Mike Pompeo, <a href="https://edition.cnn.com/2019/05/06/politics/pompeo-sea-ice-arctic-council/index.html">once declared</a> – it means ships from Asia can potentially save around 3,000 miles of journey to European ports in summer at least. But Arctic sea ice is an important component of the climate system. As it dramatically reduces the amount of sunlight absorbed by the ocean, removing this ice is predicted to further accelerate warming, through a process known as a positive feedback. This, in turn, will make the Greenland ice sheet <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2014GL059770">melt faster</a>, which is already a major contributor to <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021RG000757">sea level rise</a>. The loss of sea ice in summer would also mean changes in <a href="https://www.ipcc.ch/report/ar6/wg2/chapter/ccp6/">atmospheric circulation and storm tracks</a>, and fundamental shifts in ocean biological activity. These are just some of the <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021RG000757">highly undesirable consequences</a> and it is fair to say that the disadvantages will far outweigh the slender benefits. <a href="https://theconversation.com/profiles/jonathan-bamber-102567">Jonathan Bamber</a>, Professor of Physical Geography, <a href="https://theconversation.com/institutions/university-of-bristol-1211">University of Bristol</a> 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/arctic-ocean-could-be-ice-free-in-summer-by-2030s-say-scientists-this-would-have-global-damaging-and-dangerous-consequences-206974">original article</a>. Images: Getty

Travel Trouble

More than 100,000 tourists will head to Antarctica this summer. Should we worry about damage to the ice and its ecosystems?

As the summer sun finally arrives for people in the Southern Hemisphere, more than 100,000 tourists will head for the ice. Travelling on one of more than 50 cruise ships, they will brave the two-day trip across the notoriously rough Drake Passage below Patagonia, destined for the polar continent of Antarctica. During the COVID summer of 2020-21, just 15 tourists on two yachts visited Antarctica. But now, tourism is back – and bigger than ever. This season’s <a href="https://iaato.org/wp-content/uploads/2022/06/ATCM44-IAATO-Overview.pdf">visitor numbers</a> are up more than 40% over the largest <a href="https://iaato.org/wp-content/uploads/2020/07/IAATO-on-Antarctic-visitor-figures-2019-20-FINAL.pdf">pre-pandemic year</a>. So are all those tourists going to damage what is often considered the last untouched wilderness on the planet? Yes and no. The industry is well run. Tourists often return with a new appreciation for wild places. They spend a surprisingly short amount of time actually on the continent or its islands. But as tourism grows, so will environmental impacts such as black carbon from cruise ship funnels. Tourists can carry in microbes, seed and other invasive species on their boots and clothes – a problem that will only worsen as ice melt creates new patches of bare earth. And cruise ships are hardly emissions misers. <h2>How did Antarctic tourism go mainstream?</h2> In the 1950s, the first tourists hitched rides on Chilean and Argentinian naval vessels heading south to resupply research bases on the South Shetland Islands. From the late 1960s, dedicated icebreaker expedition ships were venturing even further south. In the early 1990s, as ex-Soviet icebreakers became available, the industry began to expand – about a dozen companies offered trips at that time. By the turn of this century, the ice continent was receiving more than 10,000 annual visitors: Antarctic tourism had gone mainstream. What does it look like today? Most Antarctic tourists travel on small “expedition-style” vessels, usually heading for the relatively accessible Antarctic Peninsula. Once there, they can take a zodiac boat ride for a closer look at wildlife and icebergs or shore excursions to visit penguin or seal colonies. Visitors can kayak, paddle-board and take the polar plunge – a necessarily brief dip into subzero waters. For most tourists, accommodation, food and other services are provided aboard ship. Over a third of all visitors never stand on the continent. Those who do set foot on Antarctica normally make brief visits, rather than taking overnight stays. For more intrepid tourists, a few operators offer overland journeys into the continent’s interior, making use of temporary seasonal camp sites. There are no permanent hotels, and Antarctic Treaty nations recently <a href="https://documents.ats.aq/ATCM44/fr/ATCM44_fr001_e.pdf">adopted a resolution</a>against permanent tourist facilities. As tourists come in increasing numbers, some operators have moved to offer ever more adventurous options such as mountaineering, heli-skiing, underwater trips in submersibles and scuba diving. <h2>Is Antarctic tourism sustainable?</h2> As Antarctic tourism booms, some advocacy organisations have warned the impact may be unsustainable. For instance, the Antarctic and Southern Ocean Coalition <a href="https://www.asoc.org/campaign/responsible-tourism-and-shipping/">argues</a> cruise tourism could put increased pressure on an environment already under significant strain from climate change. In areas visited most by tourists, the snow has a <a href="https://theconversation.com/each-antarctic-tourist-effectively-melts-83-tonnes-of-snow-new-research-177597">higher concentration</a> of black carbon from ship exhaust, which soaks up more heat and leads to snow melt. Ship traffic also risks carrying <a href="https://www.pnas.org/doi/10.1073/pnas.2110303118">hitchhiking invasive species</a> into the Southern Ocean’s vulnerable marine ecosystems. That’s to say nothing of greenhouse gas emissions. Because of the continent’s remoteness, tourists visiting Antarctica have a <a href="https://www.tandfonline.com/doi/full/10.1080/09669581003653534">higher per capita carbon footprint</a>than other cruise-ship travellers. Of course, these impacts aren’t limited to tourism. Scientific expeditions come with similar environmental costs – and while there are far fewer of them, scientists and support personnel spend far more time on the continent. <h2>Antarctic tourism isn’t going away – so we have to plan for the future</h2> Are sustainable cruises an oxymoron? Many <a href="https://www.popsci.com/environment/why-cruise-ships-are-bad-for-the-environment/#:%7E:text=Studies%20have%20shown%20one%20cruise,in%20unhealthy%20levels%20of%20pollution.">believe so</a>. Through its sheer size, the cruise industry has created <a href="https://theconversation.com/time-to-rock-the-boat-cruise-ships-can-destroy-the-very-destinations-they-sell-to-us-55245">mass tourism</a> in new places and <a href="https://theconversation.com/overtourism-a-growing-global-problem-100029">overtourism</a> in others, generating unacceptable levels of crowding, disrupting the lives of residents, repurposing local cultures for “exotic” performances, damaging the environment and adding to emissions from fossil fuels. In Antarctica, crowding, environmental impact and emissions are the most pressing issues. While 100,000 tourists a year is tiny by global tourism standards – Paris had almost 20 million in 2019 – visits are concentrated in highly sensitive ecological areas for only a few months per year. There are no residents to disturb (other than local wildlife), but by the same token, there’s no host community to protest if visitor numbers get too high. Even so, strong protections are in place. In accordance with the Antarctic Treaty System – the set of international agreements signed by countries with an Antarctic presence or an interest – tourism operators based in those nations have to apply for permits and follow <a href="https://www.ats.aq/e/protocol.html">stringent environmental regulations</a>. To avoid introducing new species, tourists have to follow rules such as disinfecting their boots and vacuuming their pockets before setting foot on the ice, and keeping a set distance from wildlife. Almost all Antarctic cruise owners belong to the International Association of Antarctica Tour Operators, the peak body that manages Antarctic tourism. For the first time this year, operators have to report their <a href="https://iaato.org/antarctic-tour-operators-fuel-consumption-to-be-analysed-as-they-embark-on-climate-strategy/">overall fuel consumption</a> as part of IAATO’s efforts to make the industry more climate-friendly. Some operators are now using hybrid vessels that can run partly on electric propulsion for short periods, reducing carbon dioxide emissions. <h2>Returning from the ice: the ambassador effect</h2> Famed travel writer Pico Iyer <a href="https://www.nytimes.com/2022/11/17/t-magazine/travel-destinations-experiences.html?te=1&nl=from-the-times&emc=edit_ufn_20221127">recently wrote</a> of his experience in the deep south of the world. The visit, he said, “awakens you to the environmental concerns of the world … you go home with important questions for your conscience as well as radiant memories”. Iyer isn’t alone. This response is widespread, known in the industry as <a href="https://www.cambridge.org/core/journals/polar-record/article/what-and-who-is-an-antarctic-ambassador/4943D999A9D58BC00D1705C110075163">Antarctic ambassadorship</a>. As you’d expect, this is <a href="https://iaato.org/antarctic-ambassadors/antarctic-ambassadors/">strongly promoted</a> by tourism operators as a positive. Is it real? That’s contentious. Studies on links between polar travel and pro-environmental behaviour have yielded <a href="https://doi.org/10.1017/S0032247408007456">mixed results</a>. We are working with two operators to examine the Antarctic tourist experience and consider what factors might feed into a long-lasting ambassador effect. If you’re one of the tourists going to Antarctica this summer, enjoy the experience – but go with care. Be aware that no trip south comes without environmental cost and use this knowledge to make clear-eyed decisions about your activities both in Antarctica and once you’re safely back home. Image credits: Getty Images This article originally appeared on <a href="https://theconversation.com/more-than-100-000-tourists-will-head-to-antarctica-this-summer-should-we-worry-about-damage-to-the-ice-and-its-ecosystems-192843" target="_blank" rel="noopener">The Conversation</a>.

International Travel

British lawmakers demand Jeremy Clarkson apologise to Meghan Markle

British lawmakers have come out swinging against Jeremy Clarkson following his “violent misogynist” opinion piece about Meghan Markle. The Top Gear host wrote a scathing piece in The Sun saying how much he "hates" the Duchess of Sussex, in the wake of the release of the Prince Harry and Meghan's Netflix documentary series. The piece, which received 17,500 complaints, was retracted with 65 British lawmakers from various political parties condemning the article and demanding an apology to Ms Markle. "We welcome The Sun's retraction of the article, we now demand action is taken against Mr Clarkson and an unreserved apology is issued to Ms Markle immediately," the letter read, which was led by Caroline Nokes, a Member of Parliament from the ruling Conservative party, and chair of Parliament's Women and Equalities Committee. "We further demand definitive action is taken to ensure no article like this is ever published again. "This sort of language has no place in our country, and it is unacceptable that it was allowed to be published in a mainstream newspaper. "Ms Markle has faced multiple credible threats to her life, requiring the intervention of the Metropolitan Police. “Hateful articles like the one written by Mr Clarkson do not exist in a vacuum and directly contribute to this unacceptable climate of hatred and violence." It follows 17,500 complaints sent to the UK's press regulator the Independent Press Standards Organisation (IPSO) for the article published in Rupert Murdoch’s rag. Clarkson was met with significant backlash and tweeted his “regret” over the column, which also saw his <a href="https://oversixty.com.au/lifestyle/family-pets/jeremy-clarkson-s-daughter-takes-a-stand-against-her-famous-dad" target="_blank" rel="noopener">daughter Emily call him out</a>. "Oh dear. I've rather put my foot in it. In a column I wrote about Meghan, I made a clumsy reference to a scene in Game of Thrones and this has gone down badly with a great many people," he wrote. "I'm horrified to have caused so much hurt and I shall be more careful in future." The Sun also just mentioned they have removed the article but refused to make any further comment. "In light of Jeremy Clarkson's tweet he has asked us to take last week's column down,” their statement read. Images: Getty

Legal

Jonnie Irwin shares an emotional health update

Jonnie Irwin, star of ‘A place in the Sun’ has given fans an emotional update on his health via social media. In a statement released on Monday Irwin, 48, said he wanted to do “as much as we can as a family” before the time comes, with him revealing that doctors have only given him six months to live upon diagnosis with terminal cancer. Despite sharing the news for the first time on Monday 14 November, Irwin was diagnosed with lung cancer in 2020 and learned that his cancer had spread to his brain. “I don’t know how long I have left,” he told Hello magazine. “I try to stay positive and my attitude is that I’m living with cancer, not dying from it.” Irwin developed a huge fanbase as the host of TV show A Place In The Sun, where he helped couples move from homes in Britain to somewhere close to “sun, sea and sand abroad”. He has received an outpouring of supportive messages since revealing his diagnosis prompted him to provide an update on Instagram, where he has an audience of over 78,000 followers. Jonnie and wife Jessica have three sons - three-year-old Rex and two-year-old twins Rada and Cormac. The beloved presenter has told Hello Magazine that he had shifted his mentality from assuming he would not be well enough for certain milestones to instead setting “little markers” of moments he wanted to be around for. Jonnie was in Italy filming A Place in the Sun when he experienced blurry vision while driving, he noticed something was off. “Within a week of flying back from filming, I was being given six months to live,” he said. Despite the initial prognosis, treatment including chemotherapy has helped prolong Irwin’s life. After two years of living with cancer, he said he wanted to share his story beyond the “very small group of friends and family” who knew. Image: Instagram

Caring

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

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. 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). 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. 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? What makes a planet killer? 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. 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. 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. <figure class="align-center "><img src="https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&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&q=45&auto=format&w=600&h=304&fit=crop&dpr=1 600w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=304&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=304&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=382&fit=crop&dpr=1 754w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=382&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/492923/original/file-20221102-25180-74aqvo.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=382&fit=crop&dpr=3 2262w" alt="" /><figcaption>Statistically, there’s less of a chance of a larger asteroid colliding with Earth compared to a smaller one. NASA</figcaption></figure> What constitutes a near miss? 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. 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. 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. 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. These near misses reiterate how important it is for us to speed up the search for near-Earth objects. Blind spots 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. 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. 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. 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. The Near-Earth Object Surveyor 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. <figure class="align-center "><img src="https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&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&q=45&auto=format&w=600&h=338&fit=crop&dpr=1 600w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=338&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=338&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=424&fit=crop&dpr=1 754w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=424&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/492925/original/file-20221102-28436-f16d5x.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=424&fit=crop&dpr=3 2262w" alt="" /><figcaption>The DART spacecraft successfully collided with Dimorphos, which itself was orbiting a larger asteroid named Didymos. NASA/Johns Hopkins APL/Steve Gribben</figcaption></figure> 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. 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. 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. 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. <figure class="align-center "><img src="https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&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&q=45&auto=format&w=600&h=363&fit=crop&dpr=1 600w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=363&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=363&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=457&fit=crop&dpr=1 754w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=457&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/492932/original/file-20221102-26-zoxo13.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=457&fit=crop&dpr=3 2262w" alt="" /><figcaption>The NEO Surveyor spacecraft won’t have the issue of observational blind spots when hunting for asteroids. NASA/JPL/University of Arizona</figcaption></figure> 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. 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" /> 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>. Image: DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA/J. da Silva/Spaceengine

Technology

“I live in a tent”: Horror renovations see woman living in home with no roof

A woman and her son have been left living in a “tent” home filled with mould, exposed wiring and holes after renovation plans went horribly wrong. In February 2020, Jill Harris hired Extension Factory to extend and add a second storey to her Melbourne home. Two years later, she says she has been left living in poor conditions after numerous problems plagued the construction work. With tarps replacing the roof overhead, Ms Harris said the home is flooded by “waterfalls that leak through the light fittings” when it rains and that the only thing her home was good for was Halloween. “I call this the tent. I live in the tent because there is no roof over my room or my son‘s room,” she told A Current Affair. “I have good days where I try to be positive and I have the lowest of lows.” <img src="https://oversixtydev.blob.core.windows.net/media/2022/09/aca-house-damage.jpg" alt="" width="1280" height="720" /> Exposed wiring, holes, and a lack of a watertight roof have been just some of the issues Jill Harris has faced while living in her unfinished home. Images: A Current Affair Ms Harris said the builders first built the storey out of square, forcing them to knock it all down and start again. “(It) just went completely wrong from there. They built it 160mm out of square, which we didn't find out till 12 months later,” she said. Work was eventually stopped by surveyor Steve Maloney after the builders allegedly continued work without the permission of the inspector. Mr Maloney said work needed to stop because of the “owner(s) and their builders' compliances with the building legislation”. Since then, Ms Harris has turned her unfinished home into a warning against the company, adorning the front with signs reading that the company is “destroying our lives”, “doesn’t care” and that “a contract with them means nothing”. “I’ts (sic) cheaper for the “Extension Factory” to put this in the hands than it is to honour my contract with them and finish my home. Tens of thousands of dollars of mistakes, so they gave up and use lawyers to protect them!” another sign reads. <img src="https://oversixtydev.blob.core.windows.net/media/2022/09/extension-factory1.jpg" alt="" width="1280" height="720" /> After no resolution was reached to finish her home, Jill Harris let out her frustration against Extension Factory through signs displayed in front of her home. Image: A Current Affair Gerry Hoggard, the owner of Extension Factory, conceded that there had been issues with the property and said he could appreciate Ms Harris being upset. “It certainly was an error, it was built out of square, we accepted responsibility and took it down,” Mr Hoggard said. “I know what she’s living through. “I don’t like it (my name) being treated that way, but I can appreciate she‘s upset about what’s transpired.” Although he claimed that Ms Harris was advised to vacate the property at the start of the build, her brother Ashley, a former Extension Factory employee, said it wasn’t going to happen. “It’s not the sort of job that you would leave anyone occupying the premises,” Mr Hoggard said. However, Ms Harris said she wasn’t told that she would need to vacate her property. A Current Affair reported that it alerted the Victorian Building Authority to Ms Harris’ situation, prompting the organisation to release a statement. "The Victorian Building Authority takes complaints against building and plumbing practitioners extremely seriously,” it read, adding that the building authority carries out thousands of inspections to ensure work is compliant. "When it doesn't, we use the powers available to us to hold practitioners accountable." Image: A Current Affair

Real Estate

Alex Jones to pay eye-watering sum in damages

Alex Jones, the host of far-right radio show InfoWars, has been ordered to pay a total of $US 49.3 million ($NZD 78.43 million) in damages for falsely claiming the 2012 Sandy Hook school shooting was a hoax. A Texas jury ruled that Jones pay $45.2 million in punitive damages, after awarding $4.1 million in compensatory damages the previous day, per <a href="https://www.bbc.com/news/world-us-canada-62444302" target="_blank" rel="noopener">BBC News</a>. Jones has repeatedly claimed that the shooting at Sandy Hook primary school, Connecticut, where 20 children and adults were killed was a “hoax” carried out by actors who opposed the Second Amendment right to bear firearms. Nail Heslin and Scarlett Lewis, the plaintiffs in the case and whose son died in the shooting, asked the court for $150 million, claiming they endured harassment and emotional distress as a result of his misinformation. Heslin told the court that Jones’ falsehoods had made his life “hell” and led to harassment and death threats from people who believed he had lied about his son’s death. The $4.1 million in compensatory damages were issued on Thursday to cover the actual costs incurred by the plaintiffs as a result of Jones’ defamation, including the private security they hired out of fear a Jones supporter may attack them during the trial. The following day’s $45.2 million are meant to deter Jones from repeating his offence. “We ask that you send a very, very simple message and that is: Stop Alex Jones,” a lawyer for the parents said in court on Friday. “Stop the monetisation of misinformation and lies. Please.” Lawyers representing Heslin and Lewis accused Jones of trying to hide evidence, arguing that he committed perjury by denying having sent any messages about the shooting - with one attorney revealing that Jones’ legal representative accidentally sent them two years of Jones’ text messages. “Did you know 12 days ago your attorneys messed up and sent me an entire digital copy of your entire cell phone with every text message you’ve sent for the past two years?” said attorney Mark Bankston, according to HuffPost. “And when informed did not take any steps to identify it as privilege?” "If I was mistaken, I was mistaken, you've got the text messages right there," Jones said. Despite his long-held position that the shooting was fake, Jones acknowledged that it was “100 percent real” in court. “I unintentionally took part in things that did hurt these people’s feelings, and I’m sorry for that,” Jones said. However, the radio host has continued to use his media platform to claim the case was rigged against him, with his InfoWars depicting a judge being consumed by flames. During his brief appearance in court, Jones was rebuked several times by the judge for lying under oath, including one moment where he was told: “This is not your show.” The trial is one of three brought against Jones by family members of the Sandy Hook victims, and comes after he has lost a series of defamation cases filed by parents by default after he failed to produce documents or testimony. But, this is the first trial where a jury agreed to award financial damages. Image: Getty Images

Money & Banking

Why the "just one drink a day" excuse no longer cuts it

According to a new study, those who have one standard drink a day are putting themselves at risk of permanent brain damage. The study of almost 21,000 people, published in the PLOS Medicine journal, found that consumption of seven or more units of alcohol per week is associated with higher iron levels in the brain. More iron in the brain is also linked to Alzheimer's and Parkinson's disease and is a potential mechanism for alcohol-related cognitive decline. The participants reported their own alcohol consumption, and their brains were scanned using magnetic resonance imaging (MRI). Of those participants, 7,000 of them also had MRIs on their livers imaged to see the levels of systemic iron. They were also required to complete a few tasks to assess their cognitive and motor function. The participants' average age was 55 years old and 48.6 per cent were female. Anya Topiwala of the University of Oxford, United Kingdom, and her colleagues found that alcohol consumption above seven units per week led to higher iron levels in basal ganglia - the part of the brain that helps with movement. “Markers of higher basal ganglia iron associated with slower executive function, lower fluid intelligence, and slower reaction times,” the study reported. “Iron accumulation in some brain regions was associated with worse cognitive function.” They concluded that moderate alcohol consumption is associated with higher iron levels in the brain. Image: Shutterstock

Caring

Marilyn Monroe dress allegedly damaged after Met Gala appearance

After sparking ire among fashion and history experts for <a href="https://oversixty.co.nz/lifestyle/beauty-style/marilyn-monroe-dress-designer-weighs-in-on-kim-kardashian-s-met-gala-outfit" target="_blank" rel="noopener">wearing Marilyn Monroe’s iconic Happy Birthday Mr President gown</a> at the Met Gala, images have emerged suggesting that Kim Kardashian may have damaged the 60-year-old garment. Its current owner, Ripley’s Believe It or Not! Museum, has said that the dress was returned undamaged after Kardashian wore it. Amanda Joiner, a vice president of licensing and publishing at Ripley’s, told the Daily Beast that “a lot of requirements” were put in place while it was handled. <blockquote class="twitter-tweet"> And this is why every historical garment archivist and textile expert about had a coronary seeing Kim Kardashian in Marilyn Monroe's dress. <a href="https://t.co/XIs9MOeEiK">https://t.co/XIs9MOeEiK</a> — Kathryn #GoBolts⛈️ Brightbill (@KEBrightbill) <a href="https://twitter.com/KEBrightbill/status/1536452582352224262?ref_src=twsrc%5Etfw">June 13, 2022</a></blockquote> “The dress was never with Kim alone. It was always with a Ripley’s representative. We always ensured that at any time we felt that the dress was in danger of ripping or we felt uncomfortable about anything, we always had the ability to say we were not going to continue with this,” Joiner said. “We did two different fittings with her. The first one was in L.A. in April and then the second one later in April to see whether or not the dress would fit. The biggest challenge that we had is that we really wanted to make sure that we kept the integrity of the dress and the preservation, because it’s 60 years old, and we feel that it’s such an iconic piece of fashion, both from a historical perspective, but also from a pop culture perspective.” However, <a href="https://twitter.com/PopCrave/status/1536415873421914112" target="_blank" rel="noopener">Pop Culture</a> posted side-by-side photos of the gown allegedly from before and after Kardashian wore it, with the ‘after’ image showing signs of stretched fabric around one of the snaps and missing crystals around the back closure. <blockquote class="twitter-tweet"> the quotes are so damn ignorant, it's not about the actual dress. it's about the meaning. marilyn was used all her life, she hardly had anything that was truly her own. This dress, it was hers. it was designed specifically and ONLY for her. now it's ruined. <a href="https://t.co/4MO4jDHFcR">https://t.co/4MO4jDHFcR</a> — ✨ (@shipsandshows) <a href="https://twitter.com/shipsandshows/status/1536425419116883969?ref_src=twsrc%5Etfw">June 13, 2022</a></blockquote> Fans were quick to weigh in with their thoughts, blaming Kardashian for the damage and pointing out the importance of conserving historical items. “Kim should’ve never worn that dress to begin with. I mean yes it’s nice to pay homage to Marilyn but she could’ve had a new dress made and replicated. This was a timeless and iconic artefact that’s been ruined,” one person commented. “Leave it to Kim to destroy a historical piece of art,” another said. “Congratulations to the Met Gala for showcasing a real-life example of why a conservation department like the Costume Institute is necessary for historically significant garments,” a third added. Collector Scott Fortner, who also shared images of the dress’ alleged damage online, told <a href="https://news.sky.com/story/lending-marilyn-monroe-dress-to-kim-kardashian-was-irresponsible-collector-says-12633589" target="_blank" rel="noopener">Sky News</a> it was “irresponsible” for the museum to loan the gown to Kardashian. "I think the disappointment that I'm experiencing is Ripley has made multiple statements that they were doing everything that they could to protect and preserve the gown," he told the outlet. "I do feel that it (was) irresponsible, this is not just a dress. "This is a cultural icon. It's a political icon. It's a Hollywood icon. "It's part of American history from an event that happened 60 years ago and…it should have been archived and preserved and taken care of." The gown was made using 6,000 crystals and was hand-sewn by costumier Jean Lewis. Images: @lmorrisette (Twitter) / Getty Images

Beauty & Style

Model’s tiny mole turns out to be cancer

A model who completely disregarded what she thought was a mole on her ankle has been diagnosed with cancer. Oceana Strachan would regularly get her skin checked to ensure she was safe from melanoma and was constantly given the green light. But she knew something was wrong when the tiny mark on her ankle was itchy and had risen a bit - raising the alarm as to whether or not it was something else. Doctors dismissed it as a mole but Oceana pushed for a biopsy to be done and it was found to be stage two melanoma. “My melanoma spot looked like a regular mole but I noticed changes like itching that raised a red flag for me,” she told <a href="https://7news.com.au/lifestyle/health-wellbeing/aussie-model-shares-warning-signs-after-tiny-find-led-to-sinister-diagnosis-c-6840204" target="_blank" rel="noopener">7News</a>. “Going through melanoma, I didn’t know if I was going to survive. I didn’t know the outcome.” <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/CdnQNQ9JBWg/?utm_source=ig_embed&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/CdnQNQ9JBWg/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by OCEANA HEGYI 🤍 (@oceanastrachan)</a> </div> </blockquote> Oceana underwent surgery in May 2021 where the affected skin was removed and saw the then 25-year-old back on her feet not too long after. A year later, Oceana spoke out about how early detection saved her life and cringed at not being sun safe. “I was 25 with olive skin... unfortunately melanoma doesn’t care how old you are or what type of skin you have,” she said. “Obviously it sucks that I’ve had to go through this but I am just one out of too many.” Image: Instagram

Body

Toddler suffers brain damage after Easter egg hunt

A young boy who suffered brain damage after a fun weekend may lose his toes and fingers after contracting a life threatening disease. Teddie was “bouncing around” with his siblings during an exciting Easter egg hunt on Good Friday but it was two days later when he woke up with a temperature. Mother Zoe Stewart noticed a pink looking bruise on his forehead which had then spread all over his stomach. Teddie’s condition began to rapidly deteriorate and he was rushed to hospital where he was diagnosed with bacterial meningitis and septicaemia. The doctors said it was too late to wait for the painkillers to kick in and they had to drill into Teddie’s shin bones. “He was starting to bleed from his mouth and his nose, it was just terrifying,” Zoe told The Mirror. “We were told what all parents never want to hear, that we needed to understand there was a chance Teddie may not make it as he has a life-threatening infection.” Teddie was transferred to Royal Manchester Children’s Hospital where he spent two weeks in the ICU - all while his parents feared the worst. Eventually he was taken off life support and began breathing on his own, however, he has suffered some brain damage of which the long term effects are still unknown. A <a href="https://www.gofundme.com/f/please-help-little-teddies-parents?qid=ac29c369ef749c5c5d13b40672d8bdf7" target="_blank" rel="noopener">GoFundMe</a> page has been created to help the family. Images: GoFundMe

Caring

Why you should never sleep on planes

It’s almost inevitable that we have all fallen asleep on planes no matter how long or short the trip is. But the thing is, it’s quite normal to do so even if it’s a mid-afternoon flight. However, British pharmacist Angela Chalmers has come forward to say that we should not be sleeping on flights due to the damage it could do to our ears from the altitude. "This leads to a vacuum in the Eustachian tubes which makes the ears feel blocked and sound dull," Angela said. If you must sleep though, Angela says to "try not to sleep during takeoff and descent as you will not be swallowing as frequently and this can lead to blocked ears." Angela explained that if the ears stay blocked for too long it could cause a series of health issues including dizziness, infections, eardrum damage, nosebleeds and hearing loss. It’s highly recommended to immediately unblock your ears by taking a deep breath and try to blow out of your nose gently while pinching your nostrils closed and keeping your mouth shut. Image: Shutterstock

Travel Trouble

Avril Lavigne shows off massive engagement ring in Paris

He was a sk8er boi she said YES Canadian rocker Avril Lavigne has shown off her huge and absolutely stunning engagement ring. After just one year of dating, Derek Ryan Smith who goes by the name Mod Sun, got down on one knee in Paris in front of the Eiffel Tower and proposed. “Oui! Je t’aime pour toujours. Dimanche. 27. Mars. 2022,” Avril wrote in a series of heartwarming photos of the proposal. A simple translation from French, Avril’s message reads “Yes! I love you forever” along with the date. Mod Sun went a step further and wrote a loving message to his now fiancée also sharing sweet snaps of the treasured moment. “The day we met I knew you were the one. Together forever til our days are done,” his message began. “I had a dream where I proposed in paris. I pulled out a ring + asked you to wear it. I was on one knee as I looked in your eyes. “You’re too beautiful for my words to describe. I grabbed your hand + took one last breath…I said “will you marry me?” + she said “yes”. “I love you Avril.” The endearing photos show the loved-up couple kissing, smiling at one another, as well as Avril showing off the heart-shaped engagement ring which glows on her left finger. Images: Instagram

Relationships

Space travel may prompt cartilage damage

Space travel may be bad for your joints, research indicates. Mice that spent a month aboard a Russian spacecraft showed early signs of cartilage breakdown, suggesting that the reduced biomechanical forces in space impact on the musculoskeletal system. And while it’s too early to translate their finding to humans, researchers from the Henry Ford Hospital in Detroit, US, say the evidence was “clear-cut”. “We believe this degradation is due to joint unloading caused by the near lack of gravity in space,” says lead author Jamie Fitzgerald, the hospital’s head of musculoskeletal genetics. “If this were to happen to humans, given enough time, it would lead to major joint problems.” With funding from NASA, Fitzgerald and colleagues analysed molecular changes in the cartilage of mice that spent 30 days in animal research enclosures aboard an unmanned Russian Bion-M1 spacecraft in 2013. This included performing tissue stains and gene expression studies on the cartilage. The results were compared to mice observed on Earth during the same period. Video footage shows the mice floating around in their enclosure during the day, then at night struggling to climb over each other and hang onto the grate inside the enclosure. Fitzgerald says the resultant cartilage breakdown was consistent with changes associated with osteoarthritis. In comparison, the mice on Earth showed no discernible cartilage degradation. “When there’s no gravity pulling down on the cartilage, it’s not able to maintain its structure, its integrity,” he says. “On Earth, every time you take a step to walk, you’re loading that cartilage. In space, there’s very little of that.” With plans to send humans to Mars, NASA is obviously interested to know what precautions it may need to take to protect human knees. “You may have some payload specialists and experienced pilots who already have some degree of pre-symptomatic cartilage damage at the time of their flight,” Fitzgerald says. “Because cartilage in humans doesn’t readily repair, the return to Earth could potentially bring long-term health problems.” The <a rel="noopener" href="https://www.nature.com/articles/s41526-019-0063-6" target="_blank">study</a> is published in the journal npg Microgravity. <div class="newsletter-box"> <div id="wpcf7-f6-p25312-o1" class="wpcf7">  </div> </div>  <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=25312&title=Space+travel+may+prompt+cartilage+damage" alt="" width="1" height="1" />  <div id="contributors"> <a rel="noopener" href="https://cosmosmagazine.com/space/space-travel-may-prompt-cartilage-damage-study-shows/" target="_blank">This article</a> was originally published on <a rel="noopener" href="https://cosmosmagazine.com" target="_blank">Cosmos Magazine</a> and was written by <a rel="noopener" href="https://cosmosmagazine.com/contributor/nick-carne" target="_blank">Nick Carne</a>. Nick Carne is the editor of Cosmos Online and editorial manager for The Royal Institution of Australia. Image: Getty Images </div>

Travel Trouble

BREAKING: TWO earthquakes hit Victoria

A 5.8 magnitude earthquake hit the area around Mansfield, in north-east Victoria, at 9.15 am on Wednesday morning. The quake was reported by Geoscience Australia 10 kilometres beneath the earth’s surface. The tremor was reportedly felt across Melbourne, regional Victoria, Canberra, Adelaide, New South Wales, and Launceston. Geoscience Australia recorded a second magnitude-4.0, 12 kilometre-deep earthquake nearby about 15 minutes later, followed by a third at depth of 6km and magnitude of 3.1 20 minutes later. The agency added that there is no tsunami threat. Victoria’s SES has said the epicentre is near Mansfield, about 150 kilometres north-east of Melbourne. <blockquote class="twitter-tweet"> Region: Mansfield, VIC Mag: 6.0 UTC: 2021-09-21 23:15:54 Lat: -37.42, Lon: 146.32 Dep: 10km For more info and updates, or if you felt this earthquake, go to <a href="https://t.co/XDfYnAnC4h">https://t.co/XDfYnAnC4h</a> — EarthquakesGA (@EarthquakesGA) <a href="https://twitter.com/EarthquakesGA/status/1440458060787433478?ref_src=twsrc%5Etfw">September 21, 2021</a></blockquote> Reports have emerged of significant damage in some parts of the state, with footage appearing on social media showing debris and damage outside the Betty’s Burger restaurant on Chapel Street in Melbourne. <img style="width: 0px; height: 0px;" src="https://oversixtydev.blob.core.windows.net/media/7844286/e_2jeyjuyaea-nd.jpg" alt="" data-udi="umb://media/cebc1bee8d044200b4bdfa876ca05e79" /> Image: paul_dowsley / Twitter Apartment buildings and offices are being evacuated in Melbourne, where footage is also being captured. Residents have also reported shaking walls, with many waking up to the tremors. <blockquote class="twitter-tweet"> Melbourne in one video. People evacuated after the earthquake and mounted police heading into the city. <a href="https://t.co/dkunUfhooQ">pic.twitter.com/dkunUfhooQ</a> — Sharnelle Vella (@SharnelleVella) <a href="https://twitter.com/SharnelleVella/status/1440462987920175106?ref_src=twsrc%5Etfw">September 21, 2021</a></blockquote> Footage of the earthquake was captured by ABC News Breakfast, with presenter Michael Rowland initially asking, “is it an earthquake or a structural thing?” “Let’s go,” he then said. “That was a big one.” <blockquote class="twitter-tweet"> A magnitude six <a href="https://twitter.com/hashtag/Earthquake?src=hash&ref_src=twsrc%5Etfw">#Earthquake</a> has rattled Melbourne and regional Victoria. This is the moment when News Breakfast presenters <a href="https://twitter.com/mjrowland68?ref_src=twsrc%5Etfw">@mjrowland68</a> and <a href="https://twitter.com/Tonaaayy_?ref_src=twsrc%5Etfw">@Tonaaayy_</a> were rocked by it. <a href="https://t.co/Z4gz0sWJve">pic.twitter.com/Z4gz0sWJve</a> — News Breakfast (@BreakfastNews) <a href="https://twitter.com/BreakfastNews/status/1440461207572398091?ref_src=twsrc%5Etfw">September 21, 2021</a></blockquote> Adam Pascale, head of the Seismology Research Centre, told the ABC that aftershocks were possible. “We are still reigning it but we think it’s a mag-5.8 potentially at this point in Gippsland,” he said. “It shook here in the northern suburbs of Melbourne for about 15-20 seconds so it’s quite a significant earthquake. “The aftershocks are likely already occurring. “You’d expect them to start straightaway. “I can already see at least two or three smaller events there. “In Licola and Woods Point they’re probably close enough to possibly have had some damage from this earthquake. “The main thing for people to remember is if they do start to feel some shaking. There’s usually a primary and a secondary wave. The primary wave will give you a few seconds to get under a table and hold on.” Image: henriettacook / Twitter

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