Heatwaves are happening more often and are becoming more deadly, a new study shows.

Cities around the world are battling extreme heat this summer. An expert explains why and how record temperatures aren't the whole story.

A gold-based coating that converts sunlight to heat may mean the end of foggy glasses and windshields, researchers say.

They might be called the "dog days" of summer, but in areas that experience extreme heat, the outdoors are not the best place for your four-legged friends.

"For the wildland firefighter, deploying a shelter is the last thing they want to do—it's the final resort, the last line of defense," says Roger Barker.

Extreme heat in 2019 that reached 111.2 Fahrenheit in the shade killed at least 354 Magellanic penguins at one of the birds' largest breeding colonies.

Dry heat can not only disinfect N95 masks but also maintain mask fit to ensure health care worker safety, a new study shows.

Want to decontaminate your disposable mask? Researchers report that all you have to do is heat it to 160 degrees Fahrenheit in the oven for five minutes.

Heat from a comet exploding just above the ground in what is now the Atacama Desert in Chile fused sandy soil into patches of glass around 12,000 yeas ago.

It's been really hot in areas of the US lately. An expert offers tips keeping cool during a heat wave and explains why they're getting harder to handle.