Located between Bolivia and Peru, Lake Titicaca is the world’s highest navigable lake—perched at a dizzying 3,812 meters above sea level. Sacred to the Incas and still home to indigenous communities ...

The Trump administration aims to remove degradation of habitat from its definition of "harm" to endangered species, proposing ...

For the best chance of watching the spectacular northern lights, many head to areas around the Arctic, such as Norway, ...

Sea ice extent in the Arctic has decreased by about 40 percent since 1979. New technologies are being deployed to regrow it.

Imagine a place where golden caribou herds roam beneath endless summer skies, polar bears dig dens deep into wind-scoured snowdrifts, and millions of migratory birds gather for a brief, miraculous ...