The Coronavirus, by the Numbers

Adam Kucharski studies how diseases spread, but he’s not handling viruses in the lab or treating sick people in the hospital. He’s a mathematician at the London School of Hygiene & Tropical Medicine, and he uses math to understand outbreaks of diseases like Ebola, SARS, influenza and now Covid-19. His goal is to design better…

36 Hours in Zermatt

“Nature is built on a stupendous plan in that region,” Mark Twain once wrote of the valley leading into Zermatt. “There is nothing tame, or cheap, or trivial — it is all magnificent.” Much of today’s Zermatt would still be familiar to Twain. The high, stony pyramid of the Matterhorn — “lonely, conspicuous, and superb,”…

How to Stop Touching Your Face

Now that we know that it’s bad to touch our faces, how do we break a habit that most of us didn’t know we had? Throughout the day, we touch a lot of surfaces — doorknobs, elevator buttons, subway poles — where viruses, including the new coronavirus, can linger for days. From there, microbes can…