Los Nevados National Park in Colombia is a breathtaking high-altitude region known for its volcanic peaks, rugged ridgelines, ...

Armed with military-grade weapons smuggled from the U.S., the 50-man force is one of dozens of “autodefensa,” or ...

Bolivia is home to nearly a fifth of the world’s tropical glaciers. but they are shrinking at an alarming rate.

High in the Rockies, researchers are discovering that wind-borne pollution and rising heat are fueling unprecedented algal blooms ...

Somewhere high in the mountains of Big Bear, California, a pair of bald eagles has done something few wildlife stories manage — they’ve captured the hearts of millions of people who tune in, day ...

Image Credit: Rootsweb / The Chronicle ...

The history of Earth is written on the great tablets of tectonic plates. The motions of plates shaped land masses, formed ...

How does fine dust aggregate into building blocks that ultimately form entire planets like our Earth? A research team led by ...

Researchers revisited the 1970s discovery of ancient stone tools at Monte Verde—an iconic site in Chile that transformed our understanding of how and when humans arrived in the Americas.