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Interestingly, hundreds of plant species in sand dunes have evolved sticky surfaces, suggesting utility in that habitat. Windblown sand coats these sticky surfaces – a phenomenon known as psammophory, which means “sand-carrying” in Greek. While a sandy coating may limit light from reaching plant surfaces, it also likely protects plants from abrasion and reflects light, reducing leaf temperature. It also defends plants from hungry predators.

Why isn’t it considered bad behavior to sit in front of a wall of screens filled with flashing numbers making bets on those numbers? Would it attract the cultural scolds if the people making those bets were drinking tall boys in brown bags, rather than sipping bespoke lattes?

Read the latest reports concerning Covid-19 and academia and it has become clear that the inequalities and representation of women have worsened. Women are submitting fewer preprints, dropping enrolments in university programmes, missing from pandemic-related scientific committees, and experiencing pressure during lockdown periods to take on traditional caregiving and domestic responsibilities. These are not simply temporary setbacks, but a call to reflect on longstanding social schemas. What this suggest is, that it is time for research that considers a wider array of variables.

“The joy of games like Hitman for me is that they’re presented with an incredibly straight face, but allow you to do incredibly silly things,” he told Polygon over email. “I’ve previously killed 553 people using only a fish in the game, so it just seemed like a natural progression for the freezer challenge.”

A website that claims to sell ad space for Covid-19 vaccinations has triggered both laughter and existential dread, with many expressing despair over the possibility that the absurd gimmick could actually be real.

There is a right way and a wrong way to do a diet study.  The wrong way is to send a survey to a few thousand people asking them to recall what they eat and linking those responses to outcomes down the road. That’s how we get studies that tell us that eggs kills you, or keep you healthy, or something. The right way is to do what the good folks at the NIH did in this study appearing in Nature Medicine – lock people in a room for 28 days and measure absolutely everything.’

To answer that requires explaining the concept of short selling, which most civilians find nearly incomprehensible. A short sale is a bet that a stock (or any other speculative asset, like bonds or gold) is going to decline in price. But to make that bet, you have to sell something you don’t already own, which is not normal behavior. To accomplish this, you have to borrow the stock from somebody who does own it. As with any loan, you have to pay interest on the borrowed asset. And you also have to keep some collateral on deposit with your broker as an assurance you’re good for the money. The hope is that the price will fall, and you can buy the shares — cover the short, in the jargon — at a lower price. Your profit would be the difference between the original sale price and the closing purchase price, minus any interest paid on the borrowed asset.

But what if you’re wrong, and the price rises? Then you’re in trouble. When you buy a stock, your risk is that you could lose the entire purchase price — but no more. With short selling, if you’re wrong, there’s no predetermined limit to how much you can lose if the price keeps rising. And if the price keeps rising, your broker will demand more collateral in the form of real money. You have a choice between giving up — covering the short and taking the loss — or keep pouring more collateral into a losing position in the hope that things will finally turn your way.

But the researchers wanted to know whether there was a reason for the cats to go wild, beyond pure pleasure. That is when one of the scientists heard about the insect-repelling properties of nepetalactone, which about 2 decades ago was shown to be as good as the famed mosquito-stopper DEET. The researchers hypothesized that when felines in the wild rub on catnip or silver vine, they’re essentially applying an insect repellant.

If you were an adherent of the ceiling view, you might reasonably say, look, even if the effect of income on happiness is linear in the log of income, that’s basically the same as saying it’s not linear in income, and that above some threshold or ceiling you’d need to increase your income by a lot in order to see any substantial increase in happiness.

So you can see why an advocate of the threshold or ceiling view of income satisfaction might be unconvinced that the log-linearity of happiness in income is much to be concerned about. Sure, it’s still growing, but after the initial steep increase in happiness that comes with getting some money, across most of the range of achievable incomes the increase is negligible.

Enslavement in the northern states is often glossed with a statement about how the practice was ended in such and such a year. The reality is more complicated. Emancipation was piecemeal, gradual, and, when it came to visitors from other states and even nations, often ambiguous.

Friday Links

Transmission of viruses was lower with physical distancing of 1 m or more, compared with a distance of less than 1 m (n=10 736, pooled adjusted odds ratio [aOR] 0·18, 95% CI 0·09 to 0·38; risk difference [RD] −10·2%, 95% CI −11·5 to −7·5; moderate certainty); protection was increased as distance was lengthened (change in relative risk [RR] 2·02 per m; pinteraction=0·041; moderate certainty). Face mask use could result in a large reduction in risk of infection (n=2647; aOR 0·15, 95% CI 0·07 to 0·34, RD −14·3%, −15·9 to −10·7; low certainty), with stronger associations with N95 or similar respirators compared with disposable surgical masks or similar (eg, reusable 12–16-layer cotton masks; pinteraction=0·090; posterior probability >95%, low certainty).

There’s a joke: What do you call 1000 good cops and ten bad cops? 1010 bad cops....

It seems paradoxical at first. While people do escape to cheery landscapes, like the farm of Nintendo’s Animal Crossing, they also spend their money on games engineered to inspire terror, fear, and anxiety. Doom Eternal, Nioh, and Resident Evil all saw high download numbers in the last few months.

What’s the appeal? In the journal Preternature, authors Robert M. Geraci, Nat Recine, and Samantha Fox make a compelling case that video games like these have a meaningful psychological role, especially today. “Faced with physical and psychological dangers, human beings imagine them as monsters and seek to master them,” they explain.

“The horrific experience of videogames, and hence their cathartic appeal, emerges when a game produces a constant level of anxiety in players while allowing the players to act on it,” the authors explain.

Gloves, masks, and other personal protective equipment (PPE) are key to keeping us safe, especially as we began to ease the lockdown rules. Yet, the environmental watchdogs worry that all that PPE will flow into the ocean. ” If they’re thrown on the streets, when it rains the gloves and masks will eventually end up in the sea,” biologist Anastasia Miliou at the Archipelagos Institute of Marine Conservation in Greece told Deutsche Welle.

Heroism by the many or the repeated heroism by occupant after occupant of a given role indicates the failure of the surrounding system. Adequate supplies, for example, or prompt pre-emptive action would have changed the effort required of many health care providers from heroic to merely demanding. In that sense, the accolades, deeply deserved as they are, can serve to divert our attention from the less glamorous, indeed the mundane work of repairing the systems so that heroes need not show up en masse to hold together a wheezing and crippled health care system.

Vavilov hypothesized that farmers never intentionally tried to domesticate the rye plant. Ancient weeding methods were based on visual cues—if something looked like a weed, it was plucked. Farmers spent generations unintentionally selecting for rye plants that looked like useful wheat, not weeds. Eventually, rye mimicked wheat so successfully, the two became almost indistinguishable.

The pants allegedly disappeared in 2005. Whenever the business offered to settle, Pearson moved the goalposts, saying he remained unsatisfied. His demands continued to escalate, and he also offered a ridiculous theory of the damages he sought under the D.C. consumer-protection statute. By April 2007, he was demanding over $65 million to settle a claim for a pair of missing pants. The case went to trial, and he lost. He appealed and lost. He sought en banc review and lost. That was, at least, the end of the litigation against the dry cleaners. But Pearson wasn’t done. After losing his ALJ job—some believed the litigation showed poor judgment, you see—he sued for wrongful termination, still insisting he had been in the right. He lost. He appealed, and lost.

Turns out that if you persist in making the same frivolous arguments for a sufficient number of years, the bar association may take notice. In 2015, the D.C. Office of Disciplinary Counsel filed ethics charges against Pearson, which, of course, he furiously contested on the grounds that he had been right all along. He lost. And, of course, he appealed....

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Developer at Brown University Library specializing in instructional design and technology, Python-based data science, and XML-driven web development.