High environmental heat and physical exertion combine to limit oxygen delivery to the heart muscle, raising ischemic risks in ...

Humidity levels, as they go up ahead of monsoon, pose a unique health risk.

And is human-caused climate change a factor?

No other mammal can survive colder body temperatures than the Arctic ground squirrel. Its chilly hibernation is inspiring new ...

Scientists are raising alarms over the planet's warming oceans, which — coupled with a strong El Niño — could increase ...

With dangerous heat settling into Mississippi, officials are reminding residents what to do if they see a dog trapped inside ...

Delhi faced a scorching day with a heat index of 51.3°C as humidity levels stayed high; a cooling trend is expected with rain ...

The heatwave hangover: What the high temperatures are really doing to your body - IN FOCUS: Are you still feeling the after-effects of the June scorcher – and bracing for the impact of yet more hot ...

As extreme heat smothered the eastern United States during the July Fourth weekend and Europe struggled with its own deadly ...

Operators should watch for changes in line sound, vibration, melt appearance, surface quality, and cooling behavior.

In cities across the U.S., parades were canceled and events were delayed because of the heat. Meanwhile, emergency rooms saw ...

A nationwide high temperature warning for the Republic has been extended into Saturday by Met Éireann; Yellow thunderstorm ...