Human teeth are as hard as shark teeth — both are coated in a mineral called hydroxyapatite.

An African elephant's ears help regulate its body temperature.

Fact #445 · Human Body

A human sneeze travels at around 100 miles per hour and can send 100,000 germs into the air.

Fact #3498 · Human Body

The human body produces billions of cells every day.

Fact #2651 · Human Body

There are more lifeforms living in your body than human cells.

Fact #2717 · Human Body

Your brain rewires itself constantly through neuroplasticity.

Fact #2698 · Human Body

The human brain contains about 86 billion neurons.

Fact #1676 · Human Body

The human body produces red blood cells in bone marrow.

Fact #202 · Human Body

Your body produces about 300 billion new cells every day.

Fact #2463 · Human Body