In the late 1940s, Arctic temperatures were warming and the Cold War was heating up. The U.S. military had grown increasingly ...

The U.S. military unearthed data about rising sea levels in the early 1950s — and has been closely watching this threat to ...

Camp Century was built to store nukes beneath Greenland's ice. See photos of the underground, "Star Wars"-like site.

Military members and veterans cheered one another on as they raced the Nordic trails at YMCA of the Rockies Snow Mountain Ranch. As adaptive skiers crossed the finish line, they were met with applause ...