Mirror neurons fire both when you perform an action and when you observe someone else performing the same action.

The Earth's rotation is responsible for the Coriolis effect.

Fact #261 · Human Body

The first artificial heart was implanted in the 1980s.

Fact #1209 · Human Body

The Arctic hare has short ears to minimize heat loss.

Fact #885 · Human Body

A sloth can take up to a month to digest a single meal.

Fact #441 · Human Body

In 1920, a town in Minnesota briefly elected a bear as mayor in a publicity stunt.

Fact #773 · Human Body

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

Fact #1367 · Human Body

The Earth is about 4.5 billion years old.

Fact #172 · Human Body

A gecko can climb vertical surfaces using microscopic hairs on its feet.

Fact #415 · Human Body