A new study suggests glaciers carved metals out from the Earth’s surface 700 million years ago, leading to chemical reactions ...

High in the freezing mountains, where the air is thin and the cliffs are treacherous, snow leopards defy the odds. With unmatched agility, stealth, and survival instincts, these elusive big cats ...

Iditarod Trail Dog Sled Race is longer than ever before due to a lack of snow. This year's race, which has 33 mushers taking ...