If a waiter at a restaurant brought you a murky, stinky glass of water, that would be unacceptable. But yet, many waiters — at least before the Covid-19 pandemic hit — were forced to breathe poorly ventilated air in restaurants and other indoor spaces where people packed together. And still today, “if anybody asks a…
Read moreVaccine passports can liberate America
Now that the Centers for Disease Control and Prevention (CDC) has said that people who have been vaccinated against Covid-19 can shed their masks, there are obvious questions: How do you verify that people are vaccinated? Especially in situations in which some people can’t get vaccinated, including young children, or may remain vulnerable after, like…
Read moreOur amazing sense of touch, explained by a Nobel laureate
Before 2010, scientists knew very little about how the sensation of touch begins its journey into a person’s consciousness. They knew that nerve endings help carry the message from different parts of our bodies to our brains. But they didn’t know what kind of receptor on the nerve ending causes the message to fire —…
Read moreWhy the WHO approval of the first malaria vaccine is a big deal
Every year, malaria kills more than 400,000 people, most of them children. There has been significant progress against the disease in the past few decades — death rates have fallen nearly in half since 2000 — but there’s still a long way to go. For decades, researchers have been working on developing a vaccine. It…
Read moreThe myth of the climate moderate
After months of discussion and debate, Democrats are at an impasse on a raft of infrastructure legislation that could make or break President Joe Biden’s effort to fight climate change. The rift, as it’s framed in countless news stories, is between progressives who want an ambitious social and climate spending bill and moderates who have…
Read moreHow you’ll know when Covid-19 has gone from “pandemic” to “endemic”
You’ve probably heard it by now: Covid-19 is not going away. The broad consensus among experts is that it’s not realistic to think we’re going to totally eradicate this virus. We will, however, see it move out of the pandemic phase and into the endemic phase. That means the virus will keep circulating in parts…
Read moreHow biological detective work can reveal who engineered a virus
SARS-CoV-2, the virus that causes Covid-19, has made our future vulnerability to biological pathogens — and what we can learn to help prevent the next pandemic — a salient concern. We don’t have much evidence one way or the other whether Covid’s emergence into the world was the result of a lab accident or a…
Read morePlaydates are ruining all the fun
It’s become a time-honored tradition in certain segments of American society: two families cross-reference their respective calendars to find a spot free of school or soccer or other obligations. On the appointed day, one child travels to the other’s house, typically accompanied by a parent. The children build a Lego village or glue googly eyes…
Read moreBiden’s Plan B for the climate crisis, explained
After a major setback on a historic package of climate legislation, President Joe Biden and Democrats in Congress are scrambling to find other ways to slash US emissions. As they race to create a Plan B for an escalating climate crisis, they stand to learn a lot from the Obama era — a history that’s…
Read moreIs it okay to harvest pig kidneys to save human lives?
“David is a great transplant surgeon. Five of his patients need new parts — one needs a heart, the others need, respectively, liver, stomach, spleen, and spinal cord — but all are of the same, relatively rare, blood-type. By chance, David learns of a healthy specimen with that very blood-type. David can take the healthy…
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