“Our physical fitness in the hot environment can certainly be improved through things like heat training,” says Chris J.

Blue states are bracing for a battle with the Trump administration over their authority to limit tailpipe emissions, a ...

Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.

In an intriguing revelation from recent research, mitochondria have been shown not only to power the cell but also to ...