During Australia's unprecedented heat wave in late January, air temperatures reached 50°C in inland South Australia.

Every summer, public health agencies warn about heat waves, and every summer, the death toll still catches communities off ...

Add Yahoo as a preferred source to see more of our stories on Google. Extreme heat warnings and advisories have been issued to more than 130 million people across the eastern U.S. this week. (National ...

Temperatures nationwide are too hot to handle as cities release advisory notices. Local and national rail services are slowing down to avoid mechanical failure. Here's how to stay safe from the ...

Can’t take the heat? Your medication might be to blame. Doctors are warning that people taking certain antidepressants could be at risk of serious health problems as temperatures soar into the triple ...