The human stomach produces a new lining every 3–5 days to prevent digesting itself.

Hyenas have powerful jaws adapted for crushing bone.

Fact #1274 · Human Body

The human brain continues to develop into early adulthood.

Fact #83 · Human Body

Your brain uses patterns to recognize faces almost instantly.

Fact #1760 · Human Body

A polar bear’s fur traps heat efficiently.

Fact #571 · Human Body

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

Fact #421 · Human Body

The human body contains about 206 bones.

Fact #267 · Human Body

In 1809, two countries declared war and then forgot to sign a peace treaty for years.

Fact #805 · Human Body

The Earth is slightly flattened at the poles.

Fact #131 · Human Body