Climbers Alex Honnold and Tommy Caldwell set out on a daring expedition to tackle Alaska’s formidable Devils Thumb. Battling harsh conditions and daunting peaks, they push their physical and mental…

In 2001, satellite imagery captured a mysterious “thermal anomaly” on an unexplored volcano at the ends of the Earth. What lies inside could provide new clues to help predict volcanic…

Sir John Franklin set off from England in 1845 with two ships and 129 men to be the first to navigate the Northwest Passage, a new trade route over the…