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by Rebecca Leber Updated Jan 22, 2025, 10:49 PM UTC Worsening wildfires mean everyone should have a basic understanding of how to read and respond to the Air Quality Index. It’s a good idea to reduce outdoor exercise on hazardous air days to cut down on exposure.Kamil Krzaczynski/AFP via Getty Images Rebecca Leber was a

How to make indoor air safer (but not necessarily safe) during the pandemic. By Brian Resnick@B_resnickbrian@vox.com     Part of The Vox guide to navigating the coronavirus crisis SARS-CoV-2, the virus that causes Covid-19, can float in the air. In particular, it can linger in poorly ventilated indoor spaces, spreading farther than 6 feet from

The afternoon sky glows red from bushfires exacerbated by climate change near Nowra in the Australian state of New South Wales on December 31, 2019.Saeed Khan/AFP via Getty Images For as long as I’ve followed global warming, advocates and activists have shared a certain faith: When the impacts get really bad, people will act. Maybe

$1,000 can raise a class’s test scores by as much as cutting class size by a third. By Matthew Yglesias@mattyglesiasmatt@vox.com   An emergency situation that turned out to be mostly a false alarm led a lot of schools in Los Angeles to install air filters, and something strange happened: Test scores went up. By a