A heat wave has hit at least 14 states across the U.S. as the winter months come to a close, with Arizona seeing temperatures as high as 112 degrees. NewsNation meteorologist Max Tsaparis breaks down ...

A long-duration heat wave is taking shape over the western half of the U.S. and forecast to stick around in the days ahead.

Marine heat waves are supercharging damage caused by hurricanes and tropical cyclones across the globe, a new study found.

Add Yahoo as a preferred source to see more of our stories on Google. A historic March heat wave has brought record-breaking temperatures to almost 180 cities from the Midwest to the West Coast. Last ...

Devices such as smartwatches, fitness bands, and temperature-monitoring patches, are now capable of tracking key physiological signals in real time.