The human eye can detect the difference between two shades of green better than any other color.

Cats have a reflective layer in their eyes that improves night vision.

Fact #1367 · Human Body

The brain named itself.

Fact #1692 · Human Body

Fossils form when organisms are preserved in sediment over millions of years.

Fact #678 · Human Body

Certain reptiles regulate body temperature through basking.

Fact #527 · Human Body

The first forests appeared during the Devonian period.

Fact #710 · Human Body

Water covers more than 70% of Earth's surface.

Fact #149 · Human Body

Ankylosaurs had armored bodies and clubbed tails.

Fact #629 · Human Body

Fossilized bones reveal information about prehistoric diets.

Fact #737 · Human Body