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kottke.org posts about science

In Search of a Flat Earth

posted by Jason Kottke   Sep 16, 2020

In Search of a Flat Earth is a documentary essay by Folding Ideas’ Dan Olson that starts out talking about people who believe the Earth is flat (and why it’s so difficult to convince them otherwise) but then takes a sharp turn toward a more recent and much more worrying conspiracy theory, QAnon. Lots of interesting information and observations throughout.

See also QAnon, Conspiracy Theories, and the Rise of Magical Thinking.

Scientists Detect Signs of Possible Life on Venus

posted by Jason Kottke   Sep 14, 2020

The planet Venus

A group of astronomers have announced that they’ve discovered evidence that there may be life in the atmosphere of Venus.

The astronomers, who reported the finding on Monday in a pair of papers, have not collected specimens of Venusian microbes, nor have they snapped any pictures of them. But with powerful telescopes, they have detected a chemical — phosphine — in the thick Venus atmosphere. After much analysis, the scientists assert that something now alive is the only explanation for the chemical’s source.

Some researchers question this hypothesis, and they suggest instead that the gas could result from unexplained atmospheric or geologic processes on a planet that remains mysterious. But the finding will also encourage some planetary scientists to ask whether humanity has overlooked a planet that may have once been more Earthlike than any other world in our solar system.

“This is an astonishing and ‘out of the blue’ finding,” said Sara Seager, a planetary scientist at the Massachusetts Institute of Technology and an author of the papers (one published in Nature Astronomy and another submitted to the journal Astrobiology). “It will definitely fuel more research into the possibilities for life in Venus’s atmosphere.”

Ultra Slow-Motion Video of Insects Taking Flight

posted by Jason Kottke   Sep 09, 2020

Research biologist Adrian Smith, who specializes in insects, recently filmed a number of different types of flying insects taking off and flying away at 3200 frames/sec. Before watching, I figured I’d find this interesting — flying and slow motion together? sign me up! — but this video was straight-up mesmerizing with just the right amount of informative narration from Smith. There’s such an amazing diversity in wing shape and flight styles among even this small group of insects; I had to keep rewinding it to watch for details that I’d missed. Also, don’t miss the fishfly breaking the fourth wall by looking right at the camera while taking off at 6:07. I see you, my dude.

Smith has previously captured flying ants in slow motion and this globular springtail bug that spins through the air at more than 22,000 rpm. (via moss & fog)

Radioactive Diamond Batteries That Last for Thousands of Years

posted by Jason Kottke   Sep 01, 2020

A pair of researchers from the University of Bristol have formed a company called Arkenlight to try to make diamond batteries out of nuclear waste that can potentially power devices for thousands of years. The betavoltaic batteries work by releasing beta radiation, which excites semiconductor material to produce electricity. These types of batteries don’t put out much power — they can’t replace your iPhone battery for example — but they do their thing for a loooong time.

Arkenlight is focused on creating batteries that have a diamond-like structure out of irradiated graphite, which is quite common.

But that’s where a radioactive isotope called carbon-14 may be able to help. Best known for its role in radiocarbon dating, which allows archaeologists to estimate the age of ancient artifacts, it can provide a boost to nuclear batteries because it can function both as a radioactive source and a semiconductor. It also has a half-life of 5,700 years, which means a carbon-14 nuclear battery could, in principle, power an electronic device for longer than humans have had written language.

I mean, it’s little more than a theory at this point so maybe it won’t be feasible after all, but what a brilliant idea: combining the radioactive source and the semiconductor (thereby upping the efficiency) and using nuclear waste to build the whole thing. Science at its most poetically useful. (via geoff manaugh)

Ammonite

posted by Jason Kottke   Aug 27, 2020

Ammonite is an upcoming romantic drama from director Francis Lee. It takes place in the 1840s and stars Kate Winslet as a palaeontologist & Saoirse Ronan as her assistant; the pair clash then fall in love. The story is based on the life of Mary Anning, who made several important contributions to paleontology.

Paleontology wouldn’t be the same without Mary Anning. She scoured the dreary coast of southern England for secrets not seen since the Jurassic, fueling the nascent 19th-century field of fossil studies with evidence of strange sea dragons, flying reptiles and other fascinating fragments of life long past. And now, over 170 years after her death, she’s got her own movie.

However, there’s no evidence that Anning and her friend, Charlotte Murchison, ever had a romantic relationship.

I have to wonder what Anning would say to this. As she wrote in a letter, “The world has used me so unkindly, I fear it has made me suspicious of everyone.” In the sexist, male-dominated world of 19th-century science, Anning’s finds were celebrated while she herself was barred from joining academic societies or even finding a path to gain equal footing with the likes of William Buckland, Gideon Mantell and other traditional heroes of paleontology who parasitized her labor. Now, in having her life’s story made a fiction, is the world using Anning again?

Ammonite opens in US theaters in November? (I mean, they reopened schools in Florida against all expert advice and common sense, so why not theaters?) Anyway, looking forward to the third movie in the Portrait of a Lady on Fire trilogy next year.

Smoke on the Wind: the Aerosol Spread of Covid-19

posted by Jason Kottke   Aug 26, 2020

Chemist Jose-Luis Jimenez writing for Time magazine: COVID-19 Is Transmitted Through Aerosols. We Have Enough Evidence, Now It Is Time to Act. In it, he argues that while much of the early attention has been on fomites (surface contamination) and droplets as pathways for spreading Covid-19, tranmission by aerosols may be more significant. His analogy of smoke makes it quite easy to understand:

When it comes to COVID-19, the evidence overwhelmingly supports aerosol transmission, and there are no strong arguments against it. For example, contact tracing has found that much COVID-19 transmission occurs in close proximity, but that many people who share the same home with an infected person do not get the disease. To understand why, it is useful to use cigarette or vaping smoke (which is also an aerosol) as an analog. Imagine sharing a home with a smoker: if you stood close to the smoker while talking, you would inhale a great deal of smoke. Replace the smoke with virus-containing aerosols, which behave very similarly, and the impact is similar: the closer you are to someone releasing virus-carrying aerosols, the more likely you are to breathe in larger amounts of virus. We know from detailed, rigorous studies that when individuals talk in close proximity, aerosols dominate transmission and droplets are nearly negligible.

Thinking of smoke can help guide our actions:

The visual analogy of smoke can help guide our risk assessment and risk reduction strategies. One just has to imagine that others they encounter are all smoking, and the goal is to breathe as little smoke as possible. But COVID-19 is not very contagious under most situations, unlike, for example, measles: the CDC says that 15 minutes of close proximity to a COVID-19 infected person often leads to contagion, which provides an estimate of how much “exhaled smoke” one may need to inhale for infection. Inhaling a little whiff of “smoke” here and there is OK, but a lot of “smoke” for a sustained period of time and without a mask is risky. (To be clear, actual smoke does not increase the probability of infection.)

In thinking about aerosolized Covid, Jimenez recommends avoiding crowds & indoor spaces and cutting down on proximity & duration, among other things.

We should continue doing what has already been recommended: wash hands, keep six feet apart, and so on. But that is not enough. A new, consistent and logical set of recommendations must emerge to reduce aerosol transmission. I propose the following: Avoid Crowding, Indoors, low Ventilation, Close proximity, long Duration, Unmasked, Talking/singing/Yelling (“A CIViC DUTY”). These are the important factors in mathematical models of aerosol transmission, and can also be simply understood as factors that impact how much “smoke” we would inhale.

But what about masks? N95s can block most aerosols but cloth masks have “huge” holes in them relative to aerosol particles, right? They still work in lowering risk (but not eliminating it!) because your “smoke” doesn’t travel as far when you’re wearing a mask and it filters incoming smoke (if your mask fits correctly and you’re keeping your distance).

Second, masks are essential, even when we are able to maintain social distance. We should also pay attention to fitting masks snugly, as they are not just a parapet against ballistic droplets, but also a means to prevent “smoke” from leaking in through gaps. We should not remove masks to talk, nor allow someone who is not wearing a mask to talk to us, because we exhale aerosols 10 times as much when talking compared to breathing. Everyone should be careful to not stand behind someone with a poorly fitting mask, as the curvature of an ill-fitting mask can cause aerosols to travel behind the person wearing it.

Great article, full of common sense advice backed up by science.

Lovely Interactive Display of Early 19th-Century Hand-Drawn Illustrations of Minerals

posted by Jason Kottke   Aug 12, 2020

Mineralogy Zoom

Mineralogy Zoom

I love this zoomable interactive display of British & Exotic Mineralogy. To create it, Nicholas Rougeux collected 718 hand-drawn mineral illustrations by James Sowerby sourced from a pair of multi-volume books called British Mineralogy and Exotic Mineralogy, published between 1802 and 1817. Then he arranged them according to hue and brightness in a collage worthy of Knoll.

British Mineralogy and Exotic Mineralogy comprise 718 illustrations by James Sowerby in an effort to illustrate the topographical mineralogy of Great Britain and minerals not then known to it. Sowerby’s plates are some of the finest examples of hand-drawn mineral illustrations ever created. The detail and care with which these illustrations were created is incredible and worthy of close examination. See the samples below.

And, oh boy, he’s selling posters of it too.

Study Suggests That Some Masks Are Much Better than Others

posted by Jason Kottke   Aug 12, 2020

Masks comparison chart

A new study on masks that measures the number of droplets emerging from the mouth during speech shows that properly fitted N95, surgical, and polypropylene masks are best, layered cotton masks are good, bandanas are not great, and neck gaiters may be worse than wearing no mask. Here’s a Washington Post article about the study.

I have some issues with this study — most masks were tested by only one speaker and mask materials were not identified precisely1 — but when combined with other studies about masks, it is clear that surgical masks or masks that are made with similar materials (polypropylene non-woven fabric) are what you want to shoot for, you want multiple layers for more protection (no single-layer microfiber gaiters), homemade cotton masks are pretty good (but would be better with a layer of polypropylene non-woven fabric), proper fit matters, and for god’s sake, stop wearing a bandana as a mask. Yes, bandanas are convenient, but you’re probably trading safety for that convenience, especially if you factor in the amount of time you’ll be wearing a mask over the next several months. A proper mask is going to protect you and your neighbors much more over the long haul — it’s just common sense at this point.

Re: the tested neck gaiter being worse than wearing no mask: the hypothesis is that the gaiter’s material splits large droplets into smaller ones, hence the higher count.

We noticed that speaking through some masks (particularly the neck fleece) seemed to disperse the largest droplets into a multitude of smaller droplets (see Supplementary Fig. S5), which explains the apparent increase in droplet count relative to no mask in that case. Considering that smaller particles are airborne longer than large droplets (larger droplets sink faster), the use of such a mask might be counterproductive.

Here’s what I’m taking away from this and other mask studies: wear the highest quality mask you can locate (multi-layered, incorporating surgical mask materials) that fits properly and, secondarily, is comfortable & convenient. For me, that’s a two-layer cotton mask (like these Vida masks) with an inserted layer of polypropylene non-woven fabric. An N95 would be much better in terms of efficacy, but it’s overkill in most situations (particularly here in VT, where rates continue to be low) and is difficult to fit properly and quickly. (via @EricTopol)

Update: Slate’s Susan Matthews goes into more detail about the problems with this study and the conclusions that others are drawing from it.

The purpose of the research was to establish that the testing method worked in principle-not to come up with meaningful or accurate verdicts about particular masks.

But she also concludes (correctly, in my mind):

Should you think twice about wearing just a gaiter inside, in close proximity to other people? Yeah, a fitted mask is probably better. But you didn’t need this study to tell you that.

(via @BrianDau)

Update: But interesting to note that in this test, scarves, bandanas, and microfiber neck gaiters came in last.

  1. What is a “gaiter type neck fleece” made out of exactly? If you look at the photo, it doesn’t look like fleece so much as microfiber polyester, which is what my kids wear for skiing. This article says the neck gaiter was “made of polyester mixed with a little spandex”, which is definitely not fleece. My guess is they tested a one-layer microfiber gaiter and that higher quality gaiters would perform better (but still not as well as a surgical mask).

QAnon, Conspiracy Theories, and the Rise of Magical Thinking

posted by Jason Kottke   Aug 11, 2020

Kirby Ferguson, creator of the Everything Is a Remix and This Is Not a Conspiracy Theory video series, has a new video out that attempts to explain the rise of QAnon, conspiracy theories, and magical thinking in America.

Ferguson zeros in on the divide between two different ways people make sense of a complex, chaotic, and uncertain world: evidence seeking and magical thinking. All of us employ both of these techniques to help ease our anxiety about the world, but those who tend towards magical thinking arrive at explanations that are based primarily on instinct, emotion, feelings, and gut reaction while evidence seekers mostly rely on scientific and empirical reasoning.

He also identifies six main aspects of magical thinking:

1. Obsession with symbols and codes (e.g. pizza as a “deep state” code for child trafficking)
2. Dot connecting (e.g. linking 5G with Covid-19)
3. Behind every event is a plan concocted by a person (e.g. Soros and the “deep state” conspiracy)
4. Purity (e.g. the Satanic panic and heavy metal music)
5. Apocalypse is nigh (e.g. the “deep state” again)
6. Preoccupation with good and evil (e.g. liberals are not only wrong but evil)

For me, the key quote about magical thinking is this one for late in the video: “These are not systems of knowledge, and they cannot build solutions. They can only criticize and second-guess.”

This Is What a Scientist Looks Like

posted by Jason Kottke   Jul 28, 2020

I Am a Scientist is an effort to introduce children to scientists outside of the narrow stereotypes that our culture typically offers (old, male, white, nerdy). They’re doing this through “scientist-of-the-month toolkits” that tell stories about contemporary working scientists who embody an “incredible range of personalities, interests, backgrounds, and pursuits”. From a blog post about the program:

Science has been the driving force in the modernization of the world as we know it, yet science as an industry has failed to adequately diversify with the times. While the new digital age offers opportunities to expand interest in and appeal of STEM careers, many barriers still hinder equitable access for all students. Conversations of famous scientists often draw answers such as “Albert Einstein” and “Bill Nye the Science Guy”. While accurate references of scientific leaders, the lack of diversity in the public image of scientists can contribute to the lack of diversity in STEM fields.

Introducing the “I Am A Scientist” initiative, which provides opportunities for students, specifically those in Junior High School and High School, to interact with the science and stories of today’s scientists-breaking down barriers like race, gender, and personal interests.

The program’s collection of classroom toolkits provide real-life stories of modern scientists, classroom resources, posters, career resources, and more. The initiative aims to help students engage with scientists that may look, act, or think like them, and are making great strides in remarkable fields that are often left out of career planning discussions. With featured scientists that range from multidimensional graduate students to globally recognized innovators at the top of their field, “I Am A Scientist” tunes into the power that comes from discovering a wide range of role models.

Only Six Weeks to Eliminate Coronavirus in the US? Sure.

posted by Jason Kottke   Jul 27, 2020

From We Can Eliminate Covid-19 if We Want To by Andy Slavitt:

We can virtually eliminate the virus any time we decide to. We can be back to a reasonably normal existence: schools, travel, job growth, safer nursing homes and other settings. And we could do it in a matter of weeks. If we want to.

Take New Zealand. With its fancy curve and life back to normal. Why can’t we? Not fair, you say. It’s an island nation. Okay. What about Germany? Not an island nation, large, growing diversity. Don’t like that comparison? What about countries that have been in big trouble? There’s Italy, France, and Spain. Those countries had it reasonably bad the same time we did. In fact, pick virtually any country you want.

But don’t tell me the United States can’t take action if we want to. And we can’t face the families of 150,000 people who didn’t have to die and tell them this had to happen. And I think it’s why our national political leaders won’t go near these families and the grieving process.

The good news — and it is good news — is we are always four to six weeks from being able to do what countries around the world have done.

I know this article is supposed to be hopeful and optimistic, but people have known what to do about Covid-19 since at least March. Instead the United States has not done it and indeed has done mostly the opposite. The “we” that are supposed to decide to lead this effort won’t because they don’t want to put in the work (it’s easier to blame the virus, Democrats, and China), they don’t want to just give money to people to stay home (a huge no-no for Republicans), and they don’t care that much about who is dying (urbanites, low-income, the elderly, Black & brown people).

As long as Republicans control the Senate and White House, the current scattershot approach of each state/county/city/person deciding what is best (or most in their self-interest) is what we’re stuck with. Treatments will improve, vaccines will be developed, many people will do the right thing and mostly stay home for many more months (sacrificing their mental health to do so), and Covid-19 will eventually come under control, but hundreds of thousands more people will die, many more will recover but carry chronic illnesses for years, vital years of the survivors’ lives will have been lost, and we will collectively grieve these losses for generations.

New Solar Telescope Finds “Campfires” on the Sun

posted by Jason Kottke   Jul 24, 2020

Sun Campfires

The European Space Agency’s Solar Orbiter is not even at its closest distance to the Sun and its telescope has already captured some images that reveal new information about our star, including features called “campfires” that are too small to have been captured by previous instruments. From the description of the video embedded above:

This animation shows a series of close-up views captured by the Extreme Ultraviolet Imager (EUI) at wavelengths of 17 nanometers, showing the upper atmosphere of the Sun, or corona, with a temperature of around 1 million degrees.

These images reveal a multitude of small flaring loops, erupting bright spots and dark, moving fibrils. A ubiquitous feature of the solar surface, uncovered for the first time by these images, have been called ‘campfires’. They are omnipresent miniature eruptions that could be contributing to the high temperatures of the solar corona and the origin of the solar wind.

The Solar Orbiter can also peek around the back side of the Sun for the first time:

“Right now, we are in the part of the 11-year solar cycle when the Sun is very quiet,” says Sami Solanki, the director of the Max Planck Institute for Solar System Research in Gottingen, Germany, and PHI Principal Investigator. “But because Solar Orbiter is at a different angle to the Sun than Earth, we could actually see one active region that wasn’t observable from Earth. That is a first. We have never been able to measure the magnetic field at the back of the Sun.”

As revealing as these first images are, at its closest approach later in the mission the Solar Orbiter’s resolving power will roughly double. Can’t wait to see what else it turns up.

A Covid-19 Vaccine Is “Only the Beginning of the End”

posted by Jason Kottke   Jul 24, 2020

The Atlantic’s Sarah Zhang has A Vaccine Reality Check for us.

Biologically, a vaccine against the COVID-19 virus is unlikely to offer complete protection. Logistically, manufacturers will have to make hundreds of millions of doses while relying, perhaps, on technology never before used in vaccines and competing for basic supplies such as glass vials. Then the federal government will have to allocate doses, perhaps through a patchwork of state and local health departments with no existing infrastructure for vaccinating adults at scale. The Centers for Disease Control and Prevention, which has led vaccine distribution efforts in the past, has been strikingly absent in discussions so far — a worrying sign that the leadership failures that have characterized the American pandemic could also hamper this process. To complicate it all, 20 percent of Americans already say they will refuse to get a COVID-19 vaccine, and with another 31 percent unsure, reaching herd immunity could be that much more difficult.

I am the least anti-vaxxer person in the world, but I have to say that getting a vaccine for Covid-19 that was rushed through trials in time for the election (October surprise!) and signed off by a Trump administration that has completely politicized science does not sound like something I want to go near. Which, for me personally, is a really really depressing thing to even think.

Update: I got a lot of flack for suggesting that I’d be skeptical of a Trump-approved vaccine rushed to market in time for the election (a very specific set of circumstances). But his buddy Putin is attempting something similar in Russia (skipping phase 3 trials), so if you don’t think Trump can try to bully the FDA and CDC into signing off on a vaccine that hasn’t been fully tested — perhaps made by a company whose CEO has donated millions to a Trump SuperPAC? — in order to salvage his reelection chances, I suggest that you haven’t paying proper attention over the past 4 years.

Update: A poll suggests that many Americans across the political spectrum are worried about a politicized FDA being forced to approve a Covid-19 vaccine before it’s adequately tested.

Seventy-eight percent of Americans worry the Covid-19 vaccine approval process is being driven more by politics than science, according to a new survey from STAT and the Harris Poll, a reflection of concern that the Trump administration may give the green light to a vaccine prematurely.

The response was largely bipartisan, with 72% of Republicans and 82% of Democrats expressing such worries, according to the poll, which was conducted last week and surveyed 2,067 American adults.

The sentiment underscores rising speculation that President Trump may pressure the Food and Drug Administration to approve or authorize emergency use of at least one Covid-19 vaccine prior to the Nov. 3 election, but before testing has been fully completed.

Viruses Explained

posted by Jason Kottke   Jul 21, 2020

Viruses Explained

In this video and accompanying infographic, scientist Dominic Walliman of Domain of Science explains what viruses are, how they infect cells, how they replicate, and what can be done to mitigate their effects on the human body.

At the beginning of this pandemic like everyone I was hearing lots about viruses, but realised I didn’t know that much about what they are. So I did a load of research and have summarised what I learned in these nine images. This video explains the key aspects of viruses: how big they are, how they infect and enter and exit cells, how viruses are classified, how they replicate, and subjects involving viral infections like how they spread from person to person, how our immune system detects and destroys them and how vaccines and anti-viral drugs work.

After watching, it’s worth checking out Walliman’s sources in the video description for a deeper dive into viruses. (via open culture)

Three Climate Change Pioneers

posted by Jason Kottke   Jul 15, 2020

From BBC Ideas, the story of three people who pioneered the science of climate change — Eunice Foote, Guy Stewart Callendar, and Charles Keeling — each of whom was under-recognized for their achievements at the time.

In particular, Eunice Foote demonstrated the greenhouse effect all the way back in 1856, but her contribution was lost to time and science until very recently.

Looking back on Earth’s history, Foote explains that “an atmosphere of that gas would give to our earth a high temperature … at one period of its history the air had mixed with it a larger proportion than at present, an increased temperature from its own action as well as from increased weight must have necessarily resulted.” Of the gases tested, she concluded that carbonic acid trapped the most heat, having a final temperature of 125 °F. Foote was years ahead of her time. What she described and theorized was the gradual warming of the Earth’s atmosphere — what today we call the greenhouse effect.

(via the morning news)

What Is Intelligence?

posted by Jason Kottke   Jul 14, 2020

How is it that I am sitting here writing this right now and you are sitting there reading this at some later point which seems like now to you? These behaviors are the result of a series of interconnected processes that have evolved over billions of years that we collective call “intelligence”.

In this video, Kurzgesagt takes a crack at explaining the simple view of intelligence as “a mechanism to solve problems” that involves several aspects: information, memory, learning, knowledge, creativity, the use of physical tools, the ability to plan for the future, and culture. As usual, their extensive list of sources provides more details and opportunities for further exploration.

The New Normal

posted by Jason Kottke   Jul 09, 2020

This Is Fine

For Vox, David Roberts writes about how “shifting baselines” affect our thinking and how easily overwhelmingly large issues like climate change or a pandemic can become normalized.

Maybe climate chaos, a rising chorus of alarm signals from around the world, will simply become our new normal. Hell, maybe income inequality, political dysfunction, and successive waves of a deadly virus will become our new normal. Maybe we’ll just get used to [waves hands] all this.

Humans often don’t remember what we’ve lost or demand that it be restored. Rather, we adjust to what we’ve got.

The concept of shifting baselines was introduced in a 1995 paper by Daniel Pauly. Roberts explains:

So what are shifting baselines? Consider a species of fish that is fished to extinction in a region over, say, 100 years. A given generation of fishers becomes conscious of the fish at a particular level of abundance. When those fishers retire, the level is lower. To the generation that enters after them, that diminished level is the new normal, the new baseline. They rarely know the baseline used by the previous generation; it holds little emotional salience relative to their personal experience.

And so it goes, each new generation shifting the baseline downward. By the end, the fishers are operating in a radically degraded ecosystem, but it does not seem that way to them, because their baselines were set at an already low level.

Over time, the fish goes extinct — an enormous, tragic loss — but no fisher experiences the full transition from abundance to desolation. No generation experiences the totality of the loss. It is doled out in portions, over time, no portion quite large enough to spur preventative action. By the time the fish go extinct, the fishers barely notice, because they no longer valued the fish anyway.

And it’s not just groups of people that do this over generations:

It turns out that, over the course of their lives, individuals do just what generations do — periodically reset and readjust to new baselines.

“There is a tremendous amount of research showing that we tend to adapt to circumstances if they are constant over time, even if they are gradually worsening,” says George Loewenstein, a professor of economics and psychology at Carnegie Mellon. He cites the London Blitz (during World War II, when bombs were falling on London for months on end) and the intifada (the Palestinian terror campaign in Israel), during which people slowly adjusted to unthinkable circumstances.

“Fear tends to diminish over time when a risk remains constant,” he says, “You can only respond for so long. After a while, it recedes to the background, seemingly no matter how bad it is.”

Ok, I’ll let you just read the rest of it, but it’s not difficult to see how shifting baselines apply to all sorts of challenges facing the world today. I mean the lines “You can only respond for so long. After a while, it recedes to the background, seemingly no matter how bad it is.” seem like they were written specifically about the pandemic.

Anthony Fauci: USA on Track for 100,000 Covid-19 Cases Per Day

posted by Jason Kottke   Jun 30, 2020

US Covid Stupid Graph

The director of the National Institute of Allergy and Infectious Diseases, Anthony Fauci, told a Senate committee today that the US could be heading towards 100,000 new reported cases of Covid-19 per day. 100,000 cases per day. Yesterday the US recorded about 40,000 new cases.

“It is going to be very disturbing, I will guarantee you that,” he said.

“What was thought to be unimaginable turns out to be the reality we’re facing right now,” Fauci said, adding that “outbreaks happen, and you have to deal with them in a very aggressive, proactive way.”

Fewer than 20 countries have recorded more than 100,000 cases in total. Canada, for instance, has confirmed about 106,000 Covid-19 cases since the outbreak began.

Public health and infectious diseases experts, who have been gravely concerned about the way the U.S. response has unfolded, concurred with Fauci’s assessment.

Bars and restaurants are reopening around the country without any serious effort to test/trace/isolate/support. In the absence of strident guidance from the federal government, people are worrying less about social distancing and wearing masks to protect others. As this guy says, it’s just a matter of math:

“It’s unfortunately just a simple consequence of math plus a lack of action,” said Marm Kilpatrick, an infectious diseases dynamics researcher at the University of California, Santa Cruz. “On the one hand it comes across as ‘Oh my God, 100,000 cases per day!’ But then if you actually look at the current case counts and trends, how would you not get that?”

Absolutely nothing has changed about the virus, so its spread is determined by pretty simple exponential growth.

Limiting person-to-person exposure and decreasing the probability of exposures becoming infections can have a huge effect on the total number of people infected because the growth is exponential. If large numbers of people start doing things like limiting travel, cancelling large gatherings, social distancing, and washing their hands frequently, the total number of infections could fall by several orders of magnitude, making the exponential work for us, not against us. Small efforts have huge results.

We’ve known for months (and epidemiologists and infectious disease experts have known for their entire careers) what works and yet the federal government and many state governments have not listened and, in some cases, have actively suppressed use of such measures. So the pandemic will continue to escalate in the United States until proper measures are put in place by governments and people follow them. The virus will not change, the mathematics will not change, so we must.

Graph at the top of the post via Rishi Desai.

Covid-19 Superspreading Events and “Speech Superemitters”

posted by Jason Kottke   Jun 25, 2020

From Christie Aschwanden’s Scientific American article about How ‘Superspreading’ Events Drive Most COVID-19 Spread comes this speculation by a group of scientists that the way in which some people talk or breathe might spread many more potential coronavirus-carrying droplets than other people.

The scientists also have found intriguing evidence that a small subset of people may behave as “speech superemitters” — individuals who consistently broadcast an order of magnitude more respiratory particles than their peers. “It is very difficult to identify who is going to be a superemitter ahead of time,” he says. “One of the superemitters was a very petite young woman. And I was a bigger, bulkier guy and was not a superemitter.”

I don’t know why I find this so interesting, but I do. Add “speech superemitter” to the list of new Covid-19 vocabulary.

Who Is Responsible For Climate Change?

posted by Jason Kottke   Jun 23, 2020

In their newest video, Kurzgesagt explores the question of responsibility around climate change: which countries are most responsible for carbon emissions and for fixing the damage they’ve caused. As always, their source material is worth a look.

The Pandemic’s Epidemic of Loneliness

posted by Jason Kottke   Jun 22, 2020

In The Price of Isolation for Rolling Stone, Alex Morris writes about how trends toward increasing social isolation in America left us ill-prepared to face weeks and months of time by ourselves during the pandemic. Studies have shown that humans in isolation are less healthy and less able to fight off disease than when other humans are around. This part in particular really really resonated with me:

Sometimes, though, the body can be tricked. When Cole and his colleagues started looking for ways to combat the physical effects of loneliness, they didn’t find that positive emotions made a difference at all. But one thing did: “It was something called eudaimonic well-being, which is a sense of purpose and meaning, a sense of a commitment to some kind of self-transcendent goal greater than your own immediate self-gratification. People who have a lot of connection to some life purpose? Their biology looked great.” Even when researchers compared lonely people with purpose to social butterflies without it, purpose came out on top. In other words, it’s possible when we’re doing things to better our society, the body assumes there’s a society there to better. We’re technically alone, but it doesn’t feel that way.

Which has profound implications in the moment in which we currently find ourselves, a moment when the physical isolation and disconnection the virus has inflicted is now layered over the clear divisions and systemic inequities that have always plagued our country. In the midst of our solitude, we’ve been confronted with the terrible knowledge that people of color are dying of the virus at the highest rates and that 40 percent of families making less than $40,000 a year have lost their livelihoods. We’ve been confronted with the killings of Ahmaud Arbery, Breonna Taylor, and George Floyd. We’ve been confronted with the lie that the virus is a great equalizer. We’ve witnessed the many ways it isn’t.

See also We’re All Lonely Together and An Epidemic of Middle-aged Male Loneliness.

The 1850s Map that Made Modern Epidemiology

posted by Jason Kottke   Jun 18, 2020

In 1854, Dr. John Snow produced a map of a London cholera outbreak which showed deaths from the disease concentrated around a water pump on Broad Street. The prevailing view at the time was that cholera spread through dirty air, but Snow hypothesized that it was actually spread through water and constructed this early medical data visualization to help prove it.

John Snow Cholera Map

Through a mix of personal interviews, clever detective work, and data analysis that included tables and a famous map, Snow managed to stop the outbreak and convince local public health officials, eventually, that cholera could be transmitted through water, not a miasma. Since his breakthrough study, the map has become an iconic piece of epidemiological history, as an illustration of keen detective work, analysis, and visual representation with a map that, even today, tells a story.

Aside from the cluster of deaths around the pump (which could be argued were the result of a miasma cloud and not contaminated water), stories of nearby people who didn’t get sick (brewers who drank the beer they produced rather than well water, people in buildings with their own wells) and far away people who died because they had drunk water from the well were also essential in proving his theory:

I was informed by this lady’s son that she had not been in the neighbourhood of Broad Street for many months. A cart went from broad Street to West End every day and it was the custom to take out a large bottle of the water from the pump in Broad Street, as she preferred it. The water was taken on Thursday 31st August., and she drank of it in the evening, and also on Friday. She was seized with cholera on the evening of the latter day, and died on Saturday

You can read more about John Snow and how his map changed science and medicine in Steven Johnson’s excellent Ghost Map.

A Visual Guide to the SARS-CoV-2 Coronavirus

posted by Jason Kottke   Jun 17, 2020

Inside SARS-CoV-2

For its July 2020 issue, Scientific American has published A Visual Guide to the SARS-CoV-2 Coronavirus detailing what scientists have learned about this tiny menace that’s brought our world to a halt.

In the graphics that follow, Scientific American presents detailed explanations, current as of mid-May, into how SARS-CoV-2 sneaks inside human cells, makes copies of itself and bursts out to infiltrate many more cells, widening infection. We show how the immune system would normally attempt to neutralize virus particles and how CoV-2 can block that effort. We explain some of the virus’s surprising abilities, such as its capacity to proofread new virus copies as they are being made to prevent mutations that could destroy them. And we show how drugs and vaccines might still be able to overcome the intruders.

Vietnam, Population 95 Million, Has Recorded 0 Deaths from Covid-19

posted by Jason Kottke   Jun 16, 2020

Several countries have been celebrated for their success in curtailing the Covid-19 pandemic — Iceland, New Zealand, Mongolia, Hong Kong, Taiwan — but Vietnam, a nation of 95 million people that borders China, has recorded only 334 total infections and 0 deaths. 0 deaths. They are currently on a 61-day streak without a single community transmission. (For reference, the US has recorded 2.1 million cases and more than 115,000 deaths with just 3.4 times the population of Vietnam.)

How have they done it? They acted early and aggressively.

Experts say experience dealing with prior pandemics, early implementation of aggressive social distancing policies, strong action from political leaders and the muscle of a one-party authoritarian state have helped Vietnam.

“They had political commitment early on at the highest level,” says John MacArthur, the U.S. Centers for Disease Control and Prevention’s country representative in neighboring Thailand. “And that political commitment went from central level all the way down to the hamlet level.”

With experience gained from dealing with the 2003 SARS and 2009 H1N1 pandemics, Vietnam’s government started organizing its response in January — as soon as reports began trickling in from Wuhan, China, where the virus is believed to have originated. The country quickly came up with a variety of tactics, including widespread quarantining and aggressive contact tracing. It has also won praise from the World Health Organization and the CDC for its transparency in dealing with the crisis.

From the BBC:

Vietnam enacted measures other countries would take months to move on, bringing in travel restrictions, closely monitoring and eventually closing the border with China and increasing health checks at borders and other vulnerable places.

Schools were closed for the Lunar New Year holiday at the end of January and remained closed until mid-May. A vast and labour intensive contact tracing operation got under way.

“This is a country that has dealt with a lot of outbreaks in the past,” says Prof Thwaites, from Sars in 2003 to avian influenza in 2010 and large outbreaks of measles and dengue.

“The government and population are very, very used to dealing with infectious diseases and are respectful of them, probably far more so than wealthier countries. They know how to respond to these things.”

By mid-March, Vietnam was sending everyone who entered the country - and anyone within the country who’d had contact with a confirmed case — to quarantine centres for 14 days.

Costs were mostly covered by the government, though accommodation was not necessarily luxurious. One woman who flew home from Australia — considering Vietnam a safer place to be - told BBC News Vietnamese that on their first night they had “only one mat, no pillows, no blankets” and one fan for the hot room.

Forced bussing to quarantine centers in the US, could you even imagine? Better that hundreds of thousands of people die, I guess.

The Vietnamese health system also implemented aggressive contact tracing:

Authorities rigorously traced down the contacts of confirmed coronavirus patients and placed them in a mandatory two-week quarantine.

“We have a very strong system: 63 provincial CDCs (centers for disease control), more than 700 district-level CDCs, and more than 11,000 commune health centers. All of them attribute to contact tracing,” said doctor Pham with the National Institute of Hygiene and Epidemiology.

A confirmed coronavirus patient has to give health authorities an exhaustive list of all the people he or she has met in the past 14 days. Announcements are placed in newspapers and aired on television to inform the public of where and when a coronavirus patient has been, calling on people to go to health authorities for testing if they have also been there at the same time, Pham said.

More from Axios and The Guardian.

Jesus Christ, Just Wear a Face Mask!

posted by Jason Kottke   Jun 11, 2020

The conclusion from a recent paper in the Proceedings of the Royal Society A:

We conclude that facemask use by the public, when used in combination with physical distancing or periods of lock-down, may provide an acceptable way of managing the COVID-19 pandemic and re-opening economic activity. These results are relevant to the developed as well as the developing world, where large numbers of people are resource poor, but fabrication of home-made, effective facemasks is possible. A key message from our analyses to aid the widespread adoption of facemasks would be: ‘my mask protects you, your mask protects me’.

From a Reuters report on the paper:

The research, led by scientists at the Britain’s Cambridge and Greenwich Universities, suggests lockdowns alone will not stop the resurgence of the new SARS-CoV-2 coronavirus, but that even homemade masks can dramatically reduce transmission rates if enough people wear them in public.

“Our analyses support the immediate and universal adoption of face masks by the public,” said Richard Stutt, who co-led the study at Cambridge.

A pair of recent papers used the geographic differences in mask usage in Germany to gauge the effectiveness of masks in preventing the spread of Covid-19. Face Masks Considerably Reduce COVID-19 Cases in Germany:

We use the synthetic control method to analyze the effect of face masks on the spread of Covid-19 in Germany. Our identification approach exploits regional variation in the point in time when face masks became compulsory. Depending on the region we analyse, we find that face masks reduced the cumulative number of registered Covid-19 cases between 2.3% and 13% over a period of 10 days after they became compulsory. Assessing the credibility of the various estimates, we conclude that face masks reduce the daily growth rate of reported infections by around 40%.

And Compulsory face mask policies do not affect community mobility in Germany suggests that people don’t go out more or “feel invincible” when they’re wearing masks:

We use anonymised GPS data from Google’s Location History feature to measure daily mobility in public spaces (groceries and pharmacies, transport hubs and workplaces). We find no evidence that compulsory face mask policies affect community mobility in public spaces in Germany. The evidence provided in this paper makes a crucial contribution to ongoing debates about how to best manage the COVID-19 pandemic.

And these are just from the last few days. Why WHY WHY!!!! are we still talking about this? There’s no credible evidence that wearing a mask is harmful, so at worse it’s harmless. If there’s like a 1-in-10 chance that masks are somewhat helpful — and the growing amount of research suggests that both 1-in-10 and “somewhat helpful” are both understatements — isn’t it worth the tiny bit of effort to wear one and help keep our neighbors safe from potential fucking death? Just in case?

I mean, look at where we are as a country right now. Most of the US is reopening while the number of infections continue to rise. Testing is still not where it needs to be in many areas. Tracing and isolation are mostly not happening. According to epidemiologists, those are the minimum things you need to do to properly contain a pandemic like this. Maybe if you’re Iceland you can pooh pooh the efficacy of masks because you test/trace/isolated to near-perfection, but if you’re going to half-ass it like the US has chosen to do, then wearing masks under semi-lockdown conditions is all we have left! Can we do the bare minimum that is asked of us?

Update: And some anecdotal evidence from Missouri: two hairstylists saw 140 clients while symptomatic last month and it resulted in zero infections. Both the hairstylists and their clients wore masks and took other precautions (staggered appointments, chairs spaced apart).

Update: I deleted a reference to this paper that many epidemiologists et al. have flagged as problematic (see here, here, and here for instance). (via @harrislapiroff)

The Masks Masquerade by Nassim Nicholas Taleb is worth a read.

“Libertarians” (in brackets) are resisting mask wearing on grounds that it constrains their freedom. Yet the entire concept of liberty lies in the Non-Aggression Principle, the equivalent of the Silver Rule: do not harm others; they in turn should not harm you. Even more insulting is the demand by pseudolibertarians that Costco should banned from forcing customers to wear mask — but libertarianism allows you to set the rules on your own property. Costco should be able to force visitors to wear pink shirts and purple glasses if they wished.

Note that by infecting another person you are not infecting just another person. You are infecting many many more and causing systemic risk.

Wear a mask. For the Sake of Others.

And finally, obviously, if wearing a mask is not advisable for you — for a genuine medical reason or if it makes you look dangerous to a racist policing system for instance — then you shouldn’t wear one! But the vast majority of us should be able to manage it.

Update: A study in Health Affairs analyzing the infection rates in US states with face mask mandates versus those without finds that a mandate was associated with a decline in the Covid-19 growth rate (italics mine).

Mandating face mask use in public is associated with a decline in the daily COVID-19 growth rate by 0.9, 1.1, 1.4, 1.7, and 2.0 percentage points in 1-5, 6-10, 11-15, 16-20, and 21+ days after signing, respectively. Estimates suggest as many as 230,000-450,000 COVID-19 cases possibly averted By May 22, 2020 by these mandates. The findings suggest that requiring face mask use in public might help in mitigating COVID-19 spread.

In a comparison among countries, those where people wore masks early fared much better than those where people didn’t. This is a pretty stark difference:

Mask vs. non-mask mortality

And this study noted that Google search volume of people searching for masks in various countries correlated with the infection rate — in general, the earlier the search volume increased in a given country, the fewer infections recorded in that country.

Update: A list of 70 scientific studies, dating all the way back to 2003, that support the wearing of face masks to prevent disease spread.

Bill Nye recently did a quick mask demonstration featuring a candle to show how effective homemade cloth masks are at blocking exhaled breath. He calls wearing a mask in public to protect other people “literally a matter of life and death”.

Stewart Reynolds shares some reasons to not wear a face mask, including selfish syndrome and chronic dickishness.

And this is a sad and all-too-typical American story in four parts. April: I’m not buying a mask; June: crowded pool party; July: complaining about being sick followed by an obituary. We need to fix this, now. People should not be dying like this — this is a 100% preventable death.

Update: The most recent version of an ongoing review of scientific studies about face mask efficacy was recently published online. From the abstract:

We recommend that public officials and governments strongly encourage the use of widespread face masks in public, including the use of appropriate regulation.

For Some, the Effects of Covid-19 Last for Months

posted by Jason Kottke   Jun 04, 2020

The Atlantic’s Ed Yong interviewed several people who, like thousands of others around the world, have been experiencing symptoms of Covid-19 for months now, indicating that the disease is chronic for some. Thousands Who Got COVID-19 in March Are Still Sick:

I interviewed nine of them for this story, all of whom share commonalities. Most have never been admitted to an ICU or gone on a ventilator, so their cases technically count as “mild.” But their lives have nonetheless been flattened by relentless and rolling waves of symptoms that make it hard to concentrate, exercise, or perform simple physical tasks. Most are young. Most were previously fit and healthy. “It is mild relative to dying in a hospital, but this virus has ruined my life,” LeClerc said. “Even reading a book is challenging and exhausting. What small joys other people are experiencing in lockdown-yoga, bread baking-are beyond the realms of possibility for me.”

One of those who has been sick for months is Paul Garner, a professor of infectious diseases:

It “has been like nothing else on Earth,” said Paul Garner, who has previously endured dengue fever and malaria, and is currently on day 77 of COVID-19. Garner, an infectious-diseases professor at the Liverpool School of Tropical Medicine, leads a renowned organization that reviews scientific evidence on preventing and treating infections. He tested negative on day 63. He had waited to get a COVID-19 test partly to preserve them for health-care workers, and partly because, at one point, he thought he was going to die. “I knew I had the disease; it couldn’t have been anything else,” he told me. I asked him why he thought his symptoms had persisted. “I honestly don’t know,” he said. “I don’t understand what’s happening in my body.”

Garner wrote about his experience for BMJ.

The illness went on and on. The symptoms changed, it was like an advent calendar, every day there was a surprise, something new. A muggy head; acutely painful calf; upset stomach; tinnitus; pins and needles; aching all over; breathlessness; dizziness; arthritis in my hands; weird sensation in the skin with synthetic materials. Gentle exercise or walking made me worse — I would feel absolutely dreadful the next day. I started talking to others. I found a marathon runner who had tried 8 km in her second week, which caused her to collapse with rigors and sleep for 24 hours. I spoke to others experiencing weird symptoms, which were often discounted by those around them as anxiety, making them doubt themselves.

We still have no idea what the long-term effects of this disease are going to be. But it is definitely not the flu. And I remain unwilling to risk myself or my family getting it.

How to Read a Scientific Paper

posted by Jason Kottke   Jun 03, 2020

With the Covid-19 pandemic and the reams of research scientists are producing in trying to understand it, many people are reading scientific research papers for the first time. Long-time science writer Carl Zimmer, who estimates he’s read tens of thousands of them in his career, provides some useful guidance in how to read them.

When you read through a scientific paper, it’s important to maintain a healthy skepticism. The ongoing flood of papers that have yet to be peer-reviewed — known as preprints — includes a lot of weak research and misleading claims. Some are withdrawn by the authors. Many will never make it into a journal. But some of them are earning sensational headlines before burning out in obscurity.

In April, for example, a team of Stanford researchers published a preprint in which they asserted that the fatality rate of Covid-19 was far lower than other experts estimated. When Andrew Gelman, a Columbia University statistician, read their preprint, he was so angry he publicly demanded an apology.

“We wasted time and effort discussing this paper whose main selling point was some numbers that were essentially the product of a statistical error,” he wrote on his blog.

Developing research-reading skills can also be helpful for activists attempting to drive change using data about policing & racism in America. (Just be aware that recent scientific studies have shown the limitations of facts in changing human minds.)

Research on How to Stop Police Violence

posted by Jason Kottke   Jun 01, 2020

From Samuel Sinyangwe, a thread about research-based solutions to stop police violence. Body cams & police training programs don’t reduce police violence, but demilitarization, stricter use-of-force policies, and better police union contracts do (among other things).

More restrictive state and local policies governing police use of force are associated with significantly lower rates of police shootings/killings by police. This is backed by 30+ years of research.

Demilitarization. Police depts that get more military weapons from the federal govt kill more people. You can stop that from happening through local and state policy. Montana (Red state) has gone the furthest on this.

Police Union Contracts. Every 4-6 years your police dept’s accountability system is re-negotiated. Purging misconduct records, reinstating fired officers, dept funding- it’s in the contract. Cities with worse contracts have higher police violence rates.

You can learn more about this research at Campaign Zero.

The Country with the Best Covid-19 Response? Mongolia.

posted by Jason Kottke   May 26, 2020

Mongolia Covid-19 response

Several countries have had solid responses to the Covid-19 pandemic: Taiwan, South Korea, New Zealand, and Hong Kong. But Indi Samarajiva thinks we should be paying much more attention to Mongolia, a country of 3.17 million people where no one has died and no locally transmitted cases have been reported.1 Let’s have that again: 3.17 million people, 0 local cases, 0 deaths. How did they do it? They saw what was happening in Wuhan, coordinated with the WHO, and acted swiftly & decisively in January.

Imagine that you could go back in time to January 23rd with the horse race results and, I dunno, the new iPhone. People believe you. China has just shut down Hubei Province, the largest cordon sanitaire in human history. What would you scream to your leaders? What would you tell them to do?

You’d tell them that this was serious and that it’s coming for sure. You’d tell them to restrict the borders now, to socially distance now, and to get medical supplies ready, also now. You’d tell them to react right now, in January itself. That’s 20/20 hindsight.

That’s exactly what Mongolia did, and they don’t have a time machine. They just saw what was happening in Hubei, they coordinated with China and the WHO, and they got their shit together fast. That’s their secret, not the elevation. They just weren’t dumb.

When you go to World In Data’s Coronavirus Data Explorer and click on “Mongolia” to add their data to the graph, nothing happens because they have zero reported cases and zero deaths. They looked at the paradox of preparation — the idea that “when the best way to save lives is to prevent a disease rather than treat it, success often looks like an overreaction” — and said “sign us up for the overreacting!”

Throughout February, Mongolia was furiously getting ready - procuring face masks, test kits, and PPE; examining hospitals, food markets, and cleaning up the city. Still no reported cases. Still no let-up in readiness. No one was like “it’s not real!” or “burn the 5G towers!”

The country also suspended their New Year celebrations, which are a big deal in Asia. They deployed hundreds of people and restricted intercity travel to make sure, though the public seemed to broadly support the move.

Again — and I’ll keep saying this until March — there were still NO CASES. If you want to know how Mongolia ended up with no local cases, it’s because they reacted when there were no local cases. And they kept acting.

For example, when they heard of a case across the border (ie, not in Mongolia) South Gobi declared an emergency and put everyone in masks. The center also shut down coal exports — a huge economic hit, which they took proactively.

As you can see, at every turn they’re reacting like other countries only did when it was too late. This looked like an over-reaction, but in fact, Mongolia was always on time.

I have to tell you true: I got really upset reading this. Like crying and furious. The United States could have done this. Italy could have done this. Brazil could have done this. Sweden could have done this. England could have done this. Spain could have done this. Mongolia listened to the experts, acted quickly, and kept their people safe. Much of the rest of the world, especially the western world — the so-called first-world countries — failed to act quickly enough and hundreds of thousands of people have needlessly died and countless others have been left with chronic health issues, grief, and economic chaos.

  1. If you look at the list of cases at the bottom of this article (translated by Google), you can see that every reported case is from people coming into the country who were tested and quarantined.

Just When You Thought It Was Safe to Go Back Into the Water…

posted by Jason Kottke   May 21, 2020

As summer ramps up in North America, people are looking to get out to enjoy the weather while also trying to keep safe from Covid-19 infection. Here in Vermont, I am very much looking forward to swim hole season and have been wondering if swimming is a safe activity during the pandemic. The Atlantic’s Olga Khazan wrote about the difficulty of opening pools back up this summer:

The coronavirus can’t remain infectious in pool water, multiple experts assured me, but people who come to pools do not stay in the water the entire time. They get out, sit under the sun, and, if they’re like my neighbors, form a circle and drink a few illicit White Claws. Social-distancing guidelines are quickly forgotten.

“If someone is swimming laps, that would be pretty safe as long as they’re not spitting water everywhere,” says Angela Rasmussen, a virologist at Columbia University. “But a Las Vegas-type pool party, that would be less safe, because people are just hanging out and breathing on each other.”

This story by Christopher Reynolds in the LA Times focuses more on transmission via water (pool water, salt water, river/lake water).

“There is no data that somebody got infected this way [with coronavirus],” said professor Karin B. Michels, chair of UCLA’s Department of Epidemiology, in a recent interview.

“I can’t say it’s absolutely 100% zero risk, but I can tell you that it would never cross my mind to get COVID-19 from a swimming pool or the ocean,” said Paula Cannon, a professor of molecular microbiology and immunology at USC’s Keck School of Medicine. “It’s just extraordinarily unlikely that this would happen.”

As long as you keep your distance of course:

Rather than worry about coronavirus in water, UCLA’s Michels and USC’s Cannon said, swimmers should stay well separated and take care before and after entering the pool, lake, river or sea.

“I would be more concerned about touching the same lockers or surfaces in the changing room or on the benches outside the pool. Those are higher risk than the water itself,” Michels said. “The other thing is you have to maintain distance. … More distance is always better.”

Sorta related but not really: ten meters is definitely more distance.