The “city under the ice” revealed a hidden chapter of the Cold War era and gave rise to a new field of scientific inquiry. As ice melt accelerates, its story isn’t over yet.

By around 7,000 years ago, the polar ice caps melted to about their modern-day size and the sea level rose accordingly, flooding the blue hole caves in the Bahamas and elsewhere with saltwater.

and a tour of a spectacular ice cave in the Canadian Rockies as it teeters on the brink of melting Like the documentary and digital series on which it’s based, the NOVA Polar Lab shows that ...

The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it's telling us something about what the planet's ...

By comparison, the heaviest polar bear — considered to be the ... researchers were alerted to the remains of an Ice Age cave bear cub. This specimen has yet to be studied properly, but it ...

New research into fossils found in Scotland’s Bone Caves suggests that polar bears may have once roamed the region during the ...

Ice cave at the Glacier 3000 on the Swiss Alps ... of the Alfred Wegener Institute's Helmholtz Centre for Polar and Marine Research in Germany. Just how much of an impact humans have caused ...

The polar bears pass through Churchill, Manitoba, hoping to catch a ride out of the tiny town on Hudson Bay's sea ice. After a summer of fasting on land, the bears need to get back to their frozen ...