Paper was invented in China around 105 AD by Cai Lun — over 1,000 years before it reached Europe.

There are more possible shuffles of a deck of cards than seconds since Earth formed.

Fact #1675 · Human Body

Fossils are formed when remains are preserved in rock over millions of years.

Fact #631 · Human Body

The Peloponnesian War lasted nearly three decades.

Fact #1442 · Human Body

Cats can rotate their ears independently.

Fact #1336 · Human Body

Extreme droughts can last for years.

Fact #832 · Human Body

The Megalodon lived millions of years before humans appeared.

Fact #704 · Human Body

Your brain uses patterns to recognize faces almost instantly.

Fact #1760 · Human Body

The Earth completes one full rotation approximately every 24 hours.

Fact #153 · Human Body