Researchers have captured footage of these bears making a wide range of vocalizations during their most intimate moments—the ...

There has been a huge push to plant native trees across the Andes in recent years. And it’s been a success. This is episode 23 of Stories of Resistance, in honor of Earth Day.

Army veteran Kevin Bittenbender and Marine veteran Kirstie Ennis look to set a world record with a 47.5-mile ...

Seismologist Deborah Kilb was wading through California earthquake records from the past four decades when she noticed ...

Local legends among the Aymara people, who called the formation the “Devil’s Doorway,” warn that the gate is not to be entered lightly.

They defined Zhang’s childhood, even as the landscape fired her yearning to see the world. “When you looked out in front of you, it was mountains after mountains. And you didn’t know what wa ...

Iran's folded rocks are a colorful formation that is part of the Greater Caucasus mountains, which formed when the Eurasian tectonic plate collided with the Arabian plate millions of years ago.