Weather

Strange whirlpools of plasma seen in the sharpest images ever captured of our star help explain the deep origins of Earth-threatening space weather and more

The Arctic is heating faster than the rest of the planet. New data illustrate how dire that is

The U.S. has been pummeled with heat waves this summer. Here’s how hot overnight temperatures can get in the way of a good night’s rest—in three charts

Smoke from northern Minnesota and western Ontario wildfires is pouring over the Great Lakes, mid-Atlantic and Northeast, bringing record levels of hazardous air pollution to major cities

Corn has taken the heat for recent Midwest summer humidity—unjustly, according to corn experts

Record-breaking heat waves are beginning to blur together—here’s why and what’s making them so unbearable

A heat wave over the Fourth of July weekend could put millions at risk of heat-related illnesses. Here’s what to do to stay safe—and why you don’t just need to drink lots of water

Temperatures in New York City’s Central Park haven’t surpassed 100 degrees Fahrenheit since 2012; but that may be about to change

A prolonged, intense heat wave will make temperatures feel as hot as 115 degrees Fahrenheit in the eastern U.S. this week

Tropical Storm Arthur is the first named storm of the Atlantic hurricane season and will bring heavy rains and potential flash flooding to the Southeast

Making artificial-intelligence tools to predict what climate change will mean for extreme weather

The well-known seismologist on the need for the U.S. to recalibrate its social commitment to science