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How to survive social distancing according to science
Social distancing won't be easy, but science shows us how to make it more manageable.
- Social distancing asks us to repress our evolutionary desire for human contact and interaction.
- Experts worry long periods of the practice will have unforeseen consequences on our mental health.
- We look at seven ways to help us mitigate social distancing's harmful effects.
In response to the COVID-19, government and public health officials have asked us to steer clear of each other. Called "social distancing," the idea is to limit the transmission of the disease by lessening the contact we have with people.
To meet this goal, the Centers for Disease Control and Prevention (CDC) has recommended postponing or canceling all mass gatherings; more than 30 states have shuttered school doors; and many cities have closed bars and restaurants.
Experts agree social distancing will help us slow COVID-19's spread, but as reported by Science, others worry it may have unforeseen consequences.
Over an extended period, loneliness and social isolation can increase stress and depression. They can exacerbate physical health problems such as heart diseases. And like coronavirus, they target the older cohorts of our population to injurious effect.
"The coronavirus spreading around the world is calling on us to suppress our profoundly human and evolutionarily hard-wired impulses for connection: seeing our friends, getting together in groups, or touching each other," Nicholas Christakis, a social scientist and physician at Yale University, told Science. "Pandemics are an especially demanding test…because we are not just trying to protect people we know, but also people we do not know or even, possibly, care about."
Social distancing will be our way of life for several weeks, maybe months. Here are seven ways to help us survive this new paradigm.
Understand social distancing
Despite the name, social distancing is really a form of social solidarity.
Most people who catch the disease will have mild to moderate symptoms—including fever, dry cough, fatigue, and sputum production—and they soon recover. Only an estimated 6 percent of people become critically ill and fewer still die. Even so, that leaves millions of people at risk of developing a debilitating case.
To protect these people, we practice social distancing to curb the disease's multiplying factor. As Lou Bloomfield, a physicist at the University of Virginia, explains:
At present, each person with COVID-19 transmits coronavirus to an average of about two to three people. With such a large multiplying factor, we have rapid exponential growth. Because it takes about five days for COVID-19 to develop, the cases are doubling every two or three days. If there are 100 cases today, there will be 200 cases in a couple of days, and a thousand cases in a little over a week. In a month, it will be almost a million cases. Not good.
Those near million cases would then swarm the public health system, severely draining resources and personnel.
To give a sense of how detrimental that could be, the United States only has 2.9 hospital beds per 1,000 citizens—a figure that represents every bed, not just the free ones. Other resources at risk of overuse include ventilators and respirators.
Through social distancing, we can flatten the curve. That doesn't mean that fewer people will get sick; however, the timeline of people contracting the disease elongates. In turn, the health system has more time to treat critical cases before new ones arrive.
"It is better to operate under the pretense that there is transmission in your community already," Syra Madad, a pathogens specialist, told Vox. "There's going to be disruption to daily life, but we want people to feel empowered by this. The decisions you make will ultimately affect the trajectory of this disease."
Keeping a sense of social solidarity in mind, alongside what philosopher Peter Singer calls the expanding circle of moral concern, may help us weather social distancing better than if we feel punished thanks to some abstract graph's extra spiky curve.
The 2009 swine flu pandemic lead to mass hysteria, according to a study conducted at the University of Michigan. The study found that people perceived H1N1 to be even deadlier than the Ebola outbreak in Africa. The truth was the opposite.
The results suggested that as the perception of risk increased—regardless of the change in actual risk—so did feelings of fear and anxiety. And this fear could lead to dangerous social or personal behavior.
"This is dangerous when the virus doesn't exist like with most mass hysteria cases, but it's even more dangerous when we're talking about a real virus that does exist," Jamiee Bell writes for Big Think. "The fear and paranoia around catching the virus lead to panic-purchasing and the spread of misinformation, which furthers the anxiety and fear in the general public."
Already with COVID-19, people have squirreled away doomsday preppers' supplies of toilet paper, paper towels, and hand sanitizer. Worse, snake oil salesmen have begun peddling fake cures that prey on people's fears.
To combat panic, we need to prioritize reason and realism. A good way to manage that is to filter our information ecosystems.
Prioritize expert-driven, reputable sources of information. The best sites for such information include the CDC's coronavirus page, your local health department's website, and the Johns Hopkins Center for Health Security. These should be your primary sources for information on what's happening and what steps to take.
Reputable news outlets like the New York Times and Wall Street Journal are good sources, but limit your exposure. The availability heuristic shows us that we make snap judgments based on how easily information comes to mind.
An oversaturation of news gives us the faulty sense that rare events occur with more frequency than they do. Primary news-driven examples include terrorist attacks, plane crashes, and, of course, pandemics.
Our sense of the world must be balanced by facts and statistics that, while less eye-catching than a front page headline, are in line with reality.
Retrofit your habit loop
With offices closed and schools shuttered, our daily routines are out of whack. This state can leave creatures of habit aimless, anxious, and stir crazy. Thankfully, you can hijack your pre-establish habit loop and retrofit it for social distancing.
Journalist Charles Duhigg has spent much time researching the science of habits. As he explains, the habit loop comes in three parts:
There's first a cue, which is a trigger for behavior. Then the behavior itself, which we usually refer to as a routine, or scientists refer to it as a routine. And then there's the reward. And the reward is actually why the habit happens in the first place, it's how your brain sort of decides, "Should I remember this pattern for the future or not?"
If you now work remotely, stick to your old cues of waking, showering, and putting on pants. Contrary to popular belief, most people who exclusively work at home manage those feats daily. After work, be sure to reward yourself with something that connects your new routine to a sweet dopamine hit.
As a bonus, you can now substitute your morning commute with something more relaxing. A cup of coffee and a good book, perhaps?
Or if you are homeschooling children, develop a schedule that incorporates routine and reward. Follow an hour of reading and workbook immediately with snack time or educational TV. Don't forget to reward lots of indoor work with outdoor excursions on sunny days.
Get outdoors and exercise
Yes, you can still take the little ones outdoors. Remember: the coronavirus spreads person-to-person through respiratory droplets. The high-contact surfaces that those droplets collect on—think tabletops, door handles, elevator buttons, etc.—are noticeably absent on interurban trails.
The outdoors provides a bevy of benefits to offset social distancing's mental cramps. Frequent contact with nature makes people happier, improves their concentration, and helps them heal. It supplies a wholesome regimen of Vitamin D, too. Doctors recommend 120 minutes of nature every week, and you can shoot for this goal in the weeks to come.
The outdoors also provides a people-free gym for those worried about losing their gains. And experts agree: Avoid the gym.
However, as Dr. Neha Chaudhary told the New York Times, you'll want to avoid high-traffic public places whether they are outdoors or not. Unfortunately, these include playgrounds and popular parks.
Make connections how you can
The CDC defines social distancing as avoiding congregate settings and maintaining a distance of approximately 6 feet from others. That's a broad guideline with a lot of wiggle room.
In an interview with the Atlantic, Carolyn Cannusicio, director of research at the Center for Public Health, translates that guidelines as follows: "I would recommend that people minimize social contact, and that means limiting all social engagements. That includes intimate gatherings among friends." However, she notes that there are exceptions:
I think the exception is if two households are in strict agreement that they are also going to reduce all outside contact and then those two households socialize together, to support one another. I can see social and mental-health advantages to that kind of approach.
Similarly, the King County Health Department points out that "social interaction is still vitally important to the mental health of young people." It recommends playdates of 10 or fewer children if children are healthy, physical contact is limited, and the play area isn't crowded.
Others take a more hard-line approach. As Lindsay Thompson, a pediatrician of the University of Florida, told NPR: "I'm personally taking a really strict line. I would say that playdates inherently have a risk—I don't know how big or small. But if we can put them off for a few weeks and replace it with family time, it would be better."
All experts agree that if you are sick, isolation is the best policy. If you must make in-person contact, be mindful of the risks, keep your distance, and follow CDC guidelines for washing your hands, not touching your face, and sneezing in a tissue you immediately throw away.
Many scientific studies have shown a strong correlation between altruistic activities and improved health, happiness, and well-being. A study in Nature Communications found that participants who spent money on others reported greater happiness than a control group who did not. Others have found that regular giving reduces depression while enhancing emotional regulation. Another found that patients reported ameliorated pain after volunteering.
"So much of public health is rightly focused on environmental toxins and the control of epidemics. However, a positive vision of public health must nurture benevolent affect and helping behavior," writes Stephen G. Post.
Social distancing may limit our opportunities for altruistic behavior, but we can get creative. We could, for example, help a high-risk relative or neighbor by offering to do their grocery shopping with our own. This keeps the high-risk individual away from crowded stores, while also lessening the number of people congregating through the aisles.
We could also form a pact with fellow parents to share homeschool responsibilities—provided, as Cannuscio recommends, everyone is healthy and parents maintain a strict agreement to reduce contact elsewhere.
And, of course, there are the traditional donations of time, money, and resources to nonprofits helping others during this difficult time.
Manage your stress
During a pandemic, stress can manifest in many ways, all harmful. Worry about ourselves and loved ones turns into ubiquitous anxiety. Changes in sleep patterns or increased alcohol use can make us tired and irritable. And underlying health conditions can worsen.
We'll need to sharpen our stress management techniques to keep our lives in balance. The CDC recommends setting aside time to unwind, exercise, and engage in activities you enjoy. Be cognizant of your eating habits, substitute alcohol for tea, and connect with others. And when you do have free time, don't spend it glued to breaking news or social media hubs (again, Don't Panic).
The CDC also recommends practicing deep breathing and meditation, which have been shown to have concentration and stress-reduction benefits. As psychologist Daniel Goleman explains:
The good news is that there's a dose-response relationship in meditation. Apparently from what we can tell the longer you do it the more benefits you get. For example, right from the beginning, there are intentional benefits, there are stress benefits, you're more resilient under stress, but we see this even more strikingly in people who have been longer-term meditators.
If your stress-reduction techniques typically involve leaving the house, you may be to escape virtually. Many museums are offering virtual tours to keep homebound minds sharp. The same goes for live performances. The Metropolitan Opera will stream free opera productions while its curtain is down.
Social distancing will prove a trial by fire. Neither humans nor our societies are built with the intention that we live as small, distant lightyears from each other constellations. In addition to the above, we have another strength to draw upon: optimism.
In one study, researchers looked at the "positive health" of the longest detained American POWs of the Vietnam War. The researchers concluded that optimism predicts "positive physical and psychological health" and provides "long-term protective benefits."
And that's a bonus tip for surviving social distancing in the weeks to come.
- The next pandemic is inevitable. Are we prepared? - Big Think ›
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- Loneliness and anxiety is increasing during the pandemic - Big Think ›
If you don't practice accountability at work you're letting the formula for success slip right through your hands.
- What is accountability? It's a tool for improving performance and, once its potential is thoroughly understood, it can be leveraged at scale in any team or organization.
- In this lesson for leaders, managers, and individuals, Shideh Sedgh Bina, a founding partner of Insigniam and the editor-in-chief of IQ Insigniam Quarterly, explains why it is so crucial to success.
- Learn to recognize the mindset of accountable versus unaccountable people, then use Shideh's guided exercise as a template for your next post-project accountability analysis—whether that project was a success or it fell short, it's equally important to do the reckoning.
Iranian Tolkien scholar finds intriguing parallels between subcontinental geography and famous map of Middle-earth
- J.R.R. Tolkien himself hinted that his stories are set in a really ancient version of Europe.
- But a fantasy realm can be inspired by a variety of places; and perhaps so is Tolkien's world.
- These intriguing similarities with Asian topography show that it may be time to 'decolonise' Middle-earth.
Mental decolonisation<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM0OS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY1MDU4Mjg3N30.pKS1PLxKYeJ6WDPAcleg7NCxzDn7Pddcg9rSJaul6no/img.png?width=980" id="56ee5" class="rm-shortcode" data-rm-shortcode-id="1d2ba98946accd12f7e0070c8d10154d" data-rm-shortcode-name="rebelmouse-image" alt="Menu page for Arda.ir, the website of the Persian Tolkien Society." />
Menu page for Arda.ir, the website of the Persian Tolkien Society.
Image: Arda.ir<p>Where on earth was Middle-earth? Based on a few hints by Tolkien himself, we've always sort-of assumed that his stories of <em>The Hobbit</em> and <em>Lord of the Rings</em> were centered on Europe, but so long ago that the shape of the coasts and the land has changed. </p><p>But perhaps that's too easy, too euro-centric an assumption; perhaps, like so many other things these days, Tolkien's fantasy realm too is in dire need of mental decolonisation.</p><p>And here's an excellent occasion: an Iranian tolkienologist has found intriguing hints that the writer based some of Middle-earth's topography on mountains, rivers and islands located in and near present-day Pakistan. </p><p>As mentioned in a previous article – recently reposted on the <a href="https://www.facebook.com/VeryStrangeMaps" target="_blank">Strange Maps Facebook page</a> on the occasion of the death of Ian Holm – Tolkien admitted that "The Shire is based on rural England, and not on any other country in the world;" and that "the action of the story takes place in the North-West of 'Middle-earth', equivalent in latitude to the coastlands of Europe and the north shores of the Mediterranean."<br></p>
Non-European topography<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM1MC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY1NTQ4MzcyMX0.891LPW42L78fdrwUhXdgOab7cbhs3YOqZK4ukIQx-Rw/img.png?width=980" id="6741c" class="rm-shortcode" data-rm-shortcode-id="f0e720018e3f9f7bec4260fe7151816e" data-rm-shortcode-name="rebelmouse-image" alt="If you look at it like that, yes: that does resemble Mordor..." />
If you look at it like that, yes: that does resemble Mordor...
Image: Mohammad Reza Kamali, reproduced with kind permission<p>Extrapolating from the location of the Shire in Middle-earth and from other clues dropped by Tolkien, geophysics and geology professor Peter Bird matched the geography of Middle-earth with that of Europe (more about that in the <a href="https://bigthink.com/strange-maps/121-where-on-earth-was-middle-earth?utm_medium=Social&utm_source=Facebook&fbclid=IwAR0ZFYK1EXrf4J3B3X5_U4hSAgidgBs24ZNTYV9QEFbz2qI34OA_DpZsn70#Echobox=1592583835" target="_blank">aforementioned article</a>).</p><p>However, seeing Middle-earth as a mere palimpsest for present-day Europe is to place an undue limit on the imagination of its creator. As Tolkien also said about the shape of his world: "(It) was devised 'dramatically' rather than geologically or paleontologically."</p><p>In other words, certain parts of Middle-earth may very well have been inspired by other places than European ones. It is telling that it took a non-European connoisseur of Tolkien's topography to find some examples. <br></p>
"Seen that map before"<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM1MS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY1MTQ3Njc3NH0.azDO1_NWm9q9FwMpmqBOV2troOX0ajAXS4lP2bLstJI/img.png?width=980" id="1b193" class="rm-shortcode" data-rm-shortcode-id="565b62df93cef8936c8f348cdb059db8" data-rm-shortcode-name="rebelmouse-image" alt="\u200bThe Indus river is a prominent geographical feature of Pakistan. Its course is similar to that of the Anduin, the Great River of Middle-earth." />
The Indus river is a prominent geographical feature of Pakistan. Its course is similar to that of the Anduin, the Great River of Middle-earth.
Image: Mohammad Reza Kamali, reproduced with kind permission<p>In an article published on <a href="https://arda.ir/" target="_blank">Arda.ir</a>, the web page for the Persian Tolkien Society, Mohammad Reza Kamali writes that during several years of cartographic study, "I found that maybe there are real lands (that) could have inspired Professor Tolkien, and some of them are not in Europe."</p><p>Around 2012, Mr Kamali's eye stopped when it came across a Google Map of Central Asia that showed the mountain chain of the Himalayas, the peaks of the Pamirs bunched together in an almost circular area, and the huge, flat oval of the Takla Makan desert, bounded to the north by the Tian-Shan mountains. </p><p>"I had seen that map before," he writes. "This is of course Mordor, the land of Sauron and the dark powers of Middle-earth, where Frodo and Sam destroy the One Ring." </p><p>In <a href="http://lotrproject.com/map" target="_blank">Tolkien's world</a>, the Himalayas transform into Ephel Duath, the Mountains of Shadow; and the Tian Shan into Ered Lithui, the Ash Mountains. And the circle-shaped Pamirs "are the same shape and in exactly the same corner as the Udûn of Mordor, where Frodo and Sam originally tried getting into Mordor, via the Black Gate."<br></p>
Similar shapes<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM1Mi9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYxMDQyODMzNX0.KHrY7rDCNNaKKJQz-xn431APM2TqxGPCaMsqNvBe1xA/img.jpg?width=980" id="7a9fa" class="rm-shortcode" data-rm-shortcode-id="642e135455b2067ac4425e6984bcc697" data-rm-shortcode-name="rebelmouse-image" alt="A U.S. Marine Corps CH-46 Sea Knight helicopter flies near the Tarbela Dam in Pakistan's Khyber-Pakhtunkhwa province, Aug. 27, 2010. Defense Department officials announced Aug. 30, 2010, the deployment of 18 helicopters to Pakistan from the 16th Combat Aviation Brigade, based at Fort Wainwright, Alaska." />
A US Marine Corps helicopter flying over the Tarbela Dam on the Indus river in Pakistan. At its center: a former river island which may have been the inspiration for Cair Andros, a ship-shaped island in Middle-earth's Anduin river.
Image: Paul Duncan (USMC), public domain<p>Mulling over these similarities, Mr Kamali became convinced that Tolkien's map work was heavily inspired by Asia. Looking further, he found more evidence. Consider Anduin, the Great River of Middle-earth, in whose waters the One Ring was lost for more than two thousand years. </p><p>On Tolkien's map, the Anduin bends toward the sea in a shape similar to that of another great river: the Indus, which runs the length of Pakistan. Like the Anduin, it flows to the west of a major mountain chain. A prominent feature of the Anduin is the river island of Cair Andros, just north of Osgiliath. Its name means 'Ship of Long Foam', a reference to its long and narrow shape, and the sharpness of its rocks, which split the waters of the Anduin like a prow. <br></p><p>Mr Kamali is not entirely sure, but proposes that Tolkien may have been inspired by a similar-shaped island in the Indus. Now integrated into the Tarbela Dam, which was inaugurated in 1976, it would still have been a separate island in the 1930s and 40s, when Tolkien dreamed up his map.</p>
Kutch as Tolfalas Island<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM1NC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYwOTU5NjcyNn0.869W8iiowQb9_T3laFKOUe5o5UMXuMlSITb1VxRlC2g/img.png?width=980" id="9c49e" class="rm-shortcode" data-rm-shortcode-id="0d1e386474d99b19a50b740112ad199f" data-rm-shortcode-name="rebelmouse-image" alt="During the rainy season, the coastal region of Kutch, near the mouth of the Indus, turns into an island that resembles Tolfalas Island, near the mouth of the Anduin." />
During the rainy season, the coastal region of Kutch, near the mouth of the Indus, turns into an island that resembles Tolfalas Island, near the mouth of the Anduin.
Image: Mohammad Reza Kamali, reproduced with kind permission<p>Turning our eyes to the mouth of the Anduin and Indus, we see another pair of islands, and Mr Kamali is more certain about the real one having inspired the fictional one. The fictional one is Tolfalas Island, the largest island in Belfalas Bay. <br></p><p>At first glance, it doesn't seem to have a real-life counterpart near where the Indus joins the Arabian Sea. But take a look at the coastal part of the Indian state of Gujarat. It is known as <em>Kutch</em>, a name which apparently refers to its alternately wet and dry states. In the rainy season, the shallow wetlands flood and Kutch becomes an island – the biggest island in the Gulf of Kutch, and not too dissimilar to Tolfalas Island. </p>
General knowledge<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM1NS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYyMDIwODkyOH0.aInJedv3tiQo1LmW-M6D5LV699oeWNltxeYcVKWwtF0/img.jpg?width=980" id="9bc6e" class="rm-shortcode" data-rm-shortcode-id="01d97d3941f9ba732b4df35c3aedd977" data-rm-shortcode-name="rebelmouse-image" alt="British Indian Empire 1909 Imperial Gazetteer of India" />
1909 map showing British India in pink (direct British control) and yellow (princely states). Circled: Kutch, clearly recognisable as an island.
Image: Edinburgh Geographical Institute; J. G. Bartholomew and Sons, public domain<p>But are these similarities really more than coincidences? Why would Tolkien, who was based in Cambridge and steeped in English lore and Germanic mythology, turn to the Indian subcontinent for topographical inspiration? Perhaps because cartographic knowledge of that part of the world was far more general in Britain then than it is now. Until the late 1940s, the countries we know today as India and Pakistan were part of the British Empire. Detailed maps of the region would have been standard fare for British atlases. </p><p>Mr Kamali is convinced that the topographical features on Tolkien's map of Middle-earth are not mere fantasy, but derive from actual places in our world, and were 'riddled' onto the map. In that case, we may look forward to more discoveries of Tolkien's real-world inspiration. <br></p>
From Frodingham to Frodo<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQzMDM1Ni9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTU5NzgzMzE2OH0.uMd43VxS9WQSWr1Z0IQ-UxIhBYkERhxTU7hoPvNachk/img.jpg?width=980" id="05037" class="rm-shortcode" data-rm-shortcode-id="753c410e12164cb59f27e56bcc743e1b" data-rm-shortcode-name="rebelmouse-image" alt="Image based on a photograph of J. R. R. Tolkien in army uniform (taken in 1916, when Tolkien was aged 24). This image is a digitally modified version with cut-out contours, added gradient "shadow" around the contours, and noise reduction." />
J.R.R. Tolkien in 1916, when he was 24. Around that time, he was stationed near the village of Frodingham, which may have given him the inspiration for the name of the main protagonist in Lord of the Rings.
Image: public domain<p>Here's one example of tolkienography - if that's what we can call the effect of actual geography on this particular writer's imagination - which I gleaned myself, some years ago in East Yorkshire. A local historian told me that Tolkien had been stationed in the area during the First World War, and had apparently stored away some local place names for later use. The name Frodo, he said, derived from a town where he had attended a few dances – Frodingham, a village across the Humber in northern Lincolnshire, not far from Scunthorpe (<em>Scunto</em>? We dodged a bullet there). </p><p>Whether that story is entirely true or not is beside the point. As fantasy fans know, any grail quest is ultimately about the quest, not the grail. In fact, to quote Mr Kamali, the treasure is important only because it's well hidden, "by a clever professor who enjoys riddles."</p><p><em>Unless otherwise indicated, illustrations are from Mr Kamali's <a href="https://arda.ir/the-tale-of-the-annotated-map-and-tolkien-hidden-riddles/?fbclid=IwAR3RmtU0ZdyzQGlK-iCsUjho4LA2W279fwO9dt8vv90FX2IeO3zrfMuMToU" target="_blank">article</a> on <a href="https://arda.ir/" target="_blank">Arda.ir</a>, reproduced with kind permission. </em><br></p><p><strong>Strange Maps #1036</strong></p><p><em>Got a strange map? Let me know at </em><a href="mailto:firstname.lastname@example.org">email@example.com</a><em>.</em></p>
The ocean's largest shark relies on vision more than previously believed.
- Japanese researchers discovered that the whale shark has "tiny teeth"—dermal denticles—protecting its eyes from abrasion.
- They also found the shark is able to retract its eyeball into the eye socket.
- Their research confirms that this giant fish relies on vision more than previously believed.
A. Anterior view of the whale shark, showing the locations of the eye (arrows). Note that whale shark eye is well projected from the orbit. Photo was taken in the sea near Saint Helena Island. B. Close-up view of the left eye of a captive whale shark (Specimen A).<p>Considering their dietary habits, vision was not thought be that important for whale sharks. This species is unique for not having any sort of eyelid or protective mechanism—until now, that is. Not only do dermal denticles protect their vision, the team, led by Taketeru Tomita, discovered that whale sharks have another trick:</p><p style="margin-left: 20px;">"We also demonstrate that the whale shark has a strong ability to retract the eyeball into the eye socket."</p><p>The researchers studied these massive sharks in an aquarium, offering them a rare look at one of the ocean's largest fish (They also studied deceased sharks). The eye denticle is different from the rest of the scales covering their body: they are designed for abrasion resistance, not ocean stealth. </p><p style="margin-left: 20px;">"The covering of the eye surface with denticles in the whale shark is probably useful in reducing the risk of mechanical damage to the eye surface." </p><p>Despite their massive size, whale sharks have relatively small eyes, measuring less than 1 percent of their total length. Their brain's visual center is also relatively small. With this discovery, the researchers realized vision plays a more important role than previously assumed. </p><p style="margin-left: 20px;">"The highly protected features of the whale shark eye, in contrast to the traditional view, seems to suggest the importance of vision in this species. Interestingly, Martin showed that whale shark eyes actively track divers swimming 3–5 m away from the animal, suggesting that vision of the whale shark plays an important role in short-range perception." </p><p>While you likely won't bump into a whale shark while swimming just off the coast, this is yet another reminder of how species adapt to their environment. </p><p><span></span>--</p><p><em>Stay in touch with Derek on <a href="http://www.twitter.com/derekberes" target="_blank">Twitter</a>, <a href="https://www.facebook.com/DerekBeresdotcom" target="_blank">Facebook</a> and <a href="https://derekberes.substack.com/" target="_blank">Substack</a>. His next book is</em> "<em>Hero's Dose: The Case For Psychedelics in Ritual and Therapy."</em></p>
A gigantic star makes off during an eight-year gap in observations.
- The massive star in the Kinsman Dwarf Galaxy seems to have disappeared between 2011 and 2019.
- It's likely that it erupted, but could it have collapsed into a black hole without a supernova?
- Maybe it's still there, but much less luminous and/or covered by dust.
A "very massive star" in the Kinman Dwarf galaxy caught the attention of astronomers in the early years of the 2000s: It seemed to be reaching a late-ish chapter in its life story and offered a rare chance to observe the death of a large star in a region low in metallicity. However, by the time scientists had the chance to turn the European Southern Observatory's (ESO) Very Large Telescope (VLT) in Paranal, Chile back around to it in 2019 — it's not a slow-turner, just an in-demand device — it was utterly gone without a trace. But how?
The two leading theories about what happened are that either it's still there, still erupting its way through its death throes, with less luminosity and perhaps obscured by dust, or it just up and collapsed into a black hole without going through a supernova stage. "If true, this would be the first direct detection of such a monster star ending its life in this manner," says Andrew Allan of Trinity College Dublin, Ireland, leader of the observation team whose study is published in Monthly Notices of the Royal Astronomical Society.
Between astronomers' last look in 2011 and 2019 is a large enough interval of time for something to happen. Not that 2001 (when it was first observed) or 2019 have much meaning, since we're always watching the past out there and the Kinman Dwarf Galaxy is 75 million light years away. We often think of cosmic events as slow-moving phenomena because so often their follow-on effects are massive and unfold to us over time. But things happen just as fast big as small. The number of things that happened in the first 10 millionth of a trillionth of a trillionth of a trillionth of a second after the Big Bang, for example, is insane.
In any event, the Kinsman Dwarf Galaxy, or PHL 293B, is far way, too far for astronomers to directly observe its stars. Their presence can be inferred from spectroscopic signatures — specifically, PHL 293B between 2001 and 2011 consistently featured strong signatures of hydrogen that indicated the presence of a massive "luminous blue variable" (LBV) star about 2.5 times more brilliant than our Sun. Astronomers suspect that some very large stars may spend their final years as LBVs.
Though LBVs are known to experience radical shifts in spectra and brightness, they reliably leave specific traces that help confirm their ongoing presence. In 2019 the hydrogen signatures, and such traces, were gone. Allan says, "It would be highly unusual for such a massive star to disappear without producing a bright supernova explosion."
The Kinsman Dwarf Galaxy, or PHL 293B, is one of the most metal-poor galaxies known. Explosive, massive, Wolf-Rayet stars are seldom seen in such environments — NASA refers to such stars as those that "live fast, die hard." Red supergiants are also rare to low Z environments. The now-missing star was looked to as a rare opportunity to observe a massive star's late stages in such an environment.
In August 2019, the team pointed the four eight-meter telescopes of ESO's ESPRESSO array simultaneously toward the LBV's former location: nothing. They also gave the VLT's X-shooter instrument a shot a few months later: also nothing.
Still pursuing the missing star, the scientists acquired access to older data for comparison to what they already felt they knew. "The ESO Science Archive Facility enabled us to find and use data of the same object obtained in 2002 and 2009," says Andrea Mehner, an ESO staff member who worked on the study. "The comparison of the 2002 high-resolution UVES spectra with our observations obtained in 2019 with ESO's newest high-resolution spectrograph ESPRESSO was especially revealing, from both an astronomical and an instrumentation point of view."
Examination of this data suggested that the LBV may have indeed been winding up to a grand final sometime after 2011.
Team member Jose Groh, also of Trinity College, says "We may have detected one of the most massive stars of the local Universe going gently into the night. Our discovery would not have been made without using the powerful ESO 8-meter telescopes, their unique instrumentation, and the prompt access to those capabilities following the recent agreement of Ireland to join ESO."
Combining the 2019 data with contemporaneous Hubble Space Telescope (HST) imagery leaves the authors of the reports with the sense that "the LBV was in an eruptive state at least between 2001 and 2011, which then ended, and may have been followed by a collapse into a massive BH without the production of an SN. This scenario is consistent with the available HST and ground-based photometry."
A star collapsing into a black hole without a supernova would be a rare event, and that argues against the idea. The paper also notes that we may simply have missed the star's supernova during the eight-year observation gap.
LBVs are known to be highly unstable, so the star dropping to a state of less luminosity or producing a dust cover would be much more in the realm of expected behavior.
Says the paper: "A combination of a slightly reduced luminosity and a thick dusty shell could result in the star being obscured. While the lack of variability between the 2009 and 2019 near-infrared continuum from our X-shooter spectra eliminates the possibility of formation of hot dust (⪆1500 K), mid-infrared observations are necessary to rule out a slowly expanding cooler dust shell."
The authors of the report are pretty confident the star experienced a dramatic eruption after 2011. Beyond that, though:
"Based on our observations and models, we suggest that PHL 293B hosted an LBV with an eruption that ended sometime after 2011. This could have been followed by
(1) a surviving star or
(2) a collapse of the LBV to a BH [black hole] without the production of a bright SN, but possibly with a weak transient."