The cave is low and dark, and it is dug into limestone on a little island in the Baltic Sea where the wind blows salt from ...

How Can Any Animal Live Without Oxygen? You might think, No oxygen for hours? That can’t be real! It is really amazing. These animals don’t live without oxygen like normal. They switch their body to ...

A small herd of six American buffalo — the largest land mammals in the country — returned to 38 acres of prairie restored in ...

Polar bear encounters with people are rare, but they can happen to people who live in, work in, or visit the Arctic. Here's how to stay safe.