Weather

Particles of sea salt in the air could stop clouds from charging up for a lightning strike

Science in meter and verse

Blistering temperatures were ranked as a Category 3—the most severe tier—in Seville, Spain’s new heat wave system

Tens of millions of Americans sweltered under heat advisories over the weekend

A study of healthy volunteers found that the combination of heat and humidity gets dangerous faster than many people realize

An atmospheric scientist explains how large, persistent bends in the jet stream can bake a region for days

Western states’ “atmospheric thirst” means more fires and strained water supplies

Crowdsourced vehicle data trace the contours of dangerous city temperatures

The launch comes after the hottest first two weeks of June ever recorded in Spain

The storm is the first of what is expected to be a very active season, with six to 10 hurricanes

The test facility is helping engineers design safer homes—but it’s not powerful enough to mimic the stronger hurricanes fueled by climate change

The Loop Current in the Gulf of Mexico has fueled major storms such as Hurricane Katrina