Extreme heat kills several hundred thousand people a year worldwide, though the data is imperfect—death certificates often list

Summer is a great time to enjoy the outdoors, but extreme heat can quickly become dangerous. According to the Centers for Disease Control and Prevention, CDC, extreme heat causes hundreds of deaths and thousands of emergency department visits in the U.

Add Yahoo as a preferred source to see more of our stories on Google. Roughly 100 million people across the United States are facing extreme temperatures this week as a heat dome scorching the western part of the country spreads to the Northeast.

Long hours outdoors, day drinking, and World Cup matches are among the factors raising the risks of heat-related illness, as hot weather spreads across the eastern US. Temperatures are expected to reach 100 degrees Fahrenheit (38 Celsius) by Thursday, with ...

Much of the US just sweltered through the July 4 holiday weekend as an intense heat dome bore down, straining power grids and prompting the cancellation of many events. Washington, DC, saw a high of 102F (39C) on Saturday, a new local record for the date.

As the U.S. recovers from its July 4 heat wave, a new study in Nature Health warns of an impending uptick in people attending hospitals for mental health and behavioral disorders, according to the first multicountry study of heat wave-related mental health ...