At the U.S. Open, Stifling Heat Causes Some Players to Lose Their Cool

At the U.S. Open, Stifling Heat Causes Some Players to Lose Their Cool

An unseasonal stretch of extreme heat and humidity has left the stadiums at the Open sweltering. But a few players, Coco Gauff among them, say the hotter, the better.
Covid Closed the Nation’s Schools. Cleaner Air Can Keep Them Open.

Covid Closed the Nation’s Schools. Cleaner Air Can Keep Them Open.

Scientists and educators are searching for ways to improve air quality in the nation’s often dilapidated school buildings.