Covid Closed the Nation’s Schools. Cleaner Air Can Keep Them Open.
On a sunny afternoon in a cluttered music room at East High in Denver, two sophomores practiced violin while their music teacher, Keith Oxman, labored over a desk in an…
NASA’s New Air Pollution Satellite Will Give Hourly Updates
When scientists switched on the instrument aboard a new satellite this summer, they got a preview of what will soon be the nation’s first continuous record of air pollution. The…