Your body generates enough heat in 30 minutes to boil half a gallon of water.

Your brain uses 20% of your energy.

Fact #1709 · Human Body

Tyrannosaurus rex had teeth that could grow over 12 inches long.

Fact #619 · Human Body

The Arctic hare has short ears to minimize heat loss.

Fact #885 · Human Body

A king cobra can raise a third of its body off the ground.

Fact #421 · Human Body

The Thirty Years’ War affected much of Central Europe.

Fact #1171 · Human Body

A hyena’s jaw is powerful enough to crush bone.

Fact #502 · Human Body

The axolotl can regenerate limbs and even parts of its heart.

Fact #366 · Human Body

The first forests appeared during the Devonian period.

Fact #710 · Human Body