WASHINGTON — As temperatures and humidity soar outside, what's happening inside the human body can become a life-or-death battle decided by just a few degrees. The critical danger point outdoors for ...

As temperatures and humidity soar outside, what's happening inside the human body can become a life-or-death battle decided by just a few degrees. The critical danger point outdoors for illness and ...

Southeast Australia is enduring a record-breaking heat wave, with temperatures rising above 40ºC in many areas.

The first heat wave of the summer is here — and it’s not even technically summer yet. These hotter-than-average temperatures will continue to envelop the Midwest and Northeast this week, bringing ...