Add Yahoo as a preferred source to see more of our stories on Google. The sticky combination of heat and high humidity can be more than uncomfortable -- it can be deadly. Mario Tama/Getty Images ...

You’ve probably heard people say, “It’s not the heat, it’s the humidity.” There’s a lot of truth to that phrase, and it’s important to understand it as summer temperatures rise. Humidity doesn’t just ...

Prisoners inside a sweltering South Florida prison were subjected to dangerously high temperatures this summer—peaking at a "real feel" of 119 degrees in one area—according to a recent expert report ...