Thanks to the coronavirus, over the past 18 months or so the quality of indoor air—in workplaces, airplanes, restaurants, and homes—has gained attention. But a recent study shows that catching a virus isn’t the only problem with some indoor air. The study followed people working in offices in five countries—the US, India, Mexico, Thailand, and the UK—and found that those working in offices with poorer air quality performed more poorly on cognitive tests.

A comprehensive review of this here, in the New York Times.