The last true wilderness in America is in the northernmost region of Alaska, and just getting there is a daring feat that requires intense planning.

A total 2,461 bathers braved the frigid waters of the Czech Republic's second-largest lake to break a world record for the ...

"A polar bear can smell a human from miles away." Video captures chilling moment polar bear approaches massive rig: 'They are ...

A hidden ecosystem of giant sea spiders, octopuses, and other stunning sea creatures shows how life can flourish even when sealed off from the surface by a thick layer of ice. A large sponge, a ...