With turquoise waters and white sand beaches, there aren’t many reasons to leave the natural wonder of the Caribbean and walk ...

The story of Alaska’s salmon is more than just a tale of fish. It’s a high-stakes drama—one that pits species against species ...

Parts of Alaska are warming up to four times faster than most of the rest of the world. That's forcing tough choices for ...

A giant sequoia located in Sequoia National Park in California, the General Sherman is 52,500 feet in volume and is more than ...

Beneath the surface of the Southern Ocean, vast volumes of cold, dense water plunge off the Antarctic continental shelf, cascading down underwater cliffs to the ocean floor thousands of meters below.