Surround a wild animal with humans, and there are bound to be some changes. Here are five animals that show differences in captivity.

Surround a wild animal with humans, and there are bound to be some changes. Here are five animals that show differences in captivity.

Every spring, the beaches of Delaware Bay play host to one of the world’s wildest parties. Millions of prehistoric crabs (and hundreds of thousands of birds) converge here. These horseshoe crabs spend most of their lives in the ocean...

The video provides an overview of the challenging conditions and unique plant and animal life found in the tundra. It highlights the short growing season, low-lying plants, and the abundance of insects that attract breeding birds. It...