Egyptian hieroglyphics uses over 700 signs — it was used for 3,500 years before being deciphered in 1822.

Your brain uses patterns to recognize faces almost instantly.

Fact #1760 · Human Body

Some animals sleep for years.

Fact #1720 · Human Body

The fangtooth fish has some of the largest teeth relative to body size in the ocean.

Fact #1392 · Human Body

The Earth's mantle lies between the crust and core.

Fact #301 · Human Body

The vaccination syringe improved medical delivery methods.

Fact #1576 · Human Body

Your stomach replaces itself every few days.

Fact #1696 · Human Body

Your brain predicts events before you consciously experience them.

Fact #1742 · Human Body

The human body contains trillions of cells.

Fact #142 · Human Body