ABC News Medical Correspondent Dr. Darien Sutton breaks down the differences between heat exhaustion and heat stroke. Plus, ...

Millions of Americans across almost a dozen states were instructed to stay out of the sun and limit outdoor activities, as ...

Widespread heat warnings are in effect across southern Ontario as a multi-day heat event builds across the region. Expect the ...

Heat advisories were in effect for a large portion of the East Coast from central Florida to Virginia through much of the ...