In 1953, Watson and Crick described the double-helix structure of DNA.

The average adult human has 32 teeth.

Fact #152 · Human Body

The invention of dialysis allows patients with kidney failure to survive.

Fact #1219 · Human Body

Some snakes shed their skin multiple times a year.

Fact #485 · Human Body

The Eiffel Tower was once the tallest man-made structure on Earth.

Fact #1518 · Human Body

Some birds have hollow bones to reduce body weight for flight.

Fact #889 · Human Body

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

Fact #348 · Human Body

Ankylosaurs had armored bodies and clubbed tails.

Fact #629 · Human Body

The Earth is slightly flattened at the poles.

Fact #131 · Human Body