A few weeks ago, a three-inch square of plastic and metal began, slowly and steadily, to upend my life. The culprit was my new portable carbon-dioxide monitor, a device that had been sitting in my Amazon cart for months. I’d first eyed the product around the height of the coronavirus pandemic, figuring it could help […]

The world has just seen the largest vaccination campaign in history. At least 13 billion COVID shots have been administered—more injections, by a sweeping margin, than there are human beings on the Earth. In the U.S. alone, millions of lives have been saved by a rollout of extraordinary scope. More than three-fifths of the population […]

For decades now, gay men have been barred from giving blood. In 2015, what had been a lifetime ban was loosened, such that gay men could be donors if they’d abstained from sex for at least a year. This was later shortened to three months. Last week, the FDA put out a new and more […]

Stephen B. Thomas, the director of the Center for Health Equity at the University of Maryland, considers himself an eternal optimist. When he reflects on the devastating pandemic that has been raging for the past three years, he chooses to focus less on what the world has lost and more on what it has gained: […]