Human linguistic capacity may be at least 100,000 years old — based on the anatomy of the hyoid bone and brain.

The human eye can distinguish millions of colors.

Fact #74 · Human Body

The human brain continues to develop into early adulthood.

Fact #83 · Human Body

Some sharks can sense a drop of blood from far away.

Fact #348 · Human Body

The first artificial heart was implanted in the 1980s.

Fact #1209 · Human Body

The McGurk effect shows how visual cues can alter what we hear.

Fact #1472 · Human Body

Some snakes shed their skin multiple times a year.

Fact #485 · Human Body

The Trail of Tears forced Native American tribes westward in the 1830s.

Fact #1129 · Human Body

The heart pumps blood through approximately 60,000 miles of blood vessels.

Fact #165 · Human Body