More than 40 million people in the U.S. were under heat alerts Friday, according to the National Weather Service.

Brace for the ‘heat dome’. Temperatures across the Midwest and East Coast will hit dangerous levels this coming week - ...

In the U.S., hundreds of people working or playing outside – even those who seem healthy – succumb to heat-related illnesses ...

Some groups said the order was “madness” after recent layoffs, but others said it could improve how the country responds to ...