The human gut contains about 100 times more DNA from microorganisms than from human cells.

The fennec fox has large ears that help dissipate heat.

Fact #865 · Human Body

The Thirty Years’ War affected much of Central Europe.

Fact #1171 · Human Body

Mammoths and early humans lived at the same time.

Fact #633 · Human Body

Dust storms can reduce visibility to near zero.

Fact #850 · Human Body

The human brain operates on about 20 watts of power.

Fact #1737 · Human Body

The Arctic hare has short ears to minimize heat loss.

Fact #885 · Human Body

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

Fact #415 · Human Body

Stress hormones prepare the body for a fight-or-flight response.

Fact #959 · Human Body