Archaeologists working in Kenya found the footprints of two distinct human ancestors preserved in the fossilized mud of an ancient lake — walking side by side.

A new CDC report finds that more than 85% of U.S. adults 65 and older are not getting enough exercise. All adults should get moderate aerobic activity and weight or resistance training every week.

Author and TV host Kelly Corrigan has a radical way to support a loved one through a crisis, big or small. Here's her ...

NPR's Steve Inskeep talks to Eric Garcia, Washington correspondent for "The Independent," about President-elect Trump's nominee to lead health and human services Robert F. Kennedy Jr.

It's time to discuss one of the perennial debates of the holiday season. Are real Christmas trees or their fake counterparts ...

Some Indigenous advocates at this year's international climate negotiations in Baku, Azerbaijan say the deals made fall short ...