The human body is about 60% water — the brain is about 75% water.

The eruption of Krakatoa in 1883 was heard thousands of miles away.

Fact #820 · Human Body

The Tyrannosaurus rex may have had excellent vision.

Fact #687 · Human Body

The Peloponnesian War lasted nearly three decades.

Fact #1442 · Human Body

The Earth's rotation is gradually slowing over time.

Fact #105 · Human Body

An ostrich's eye is larger than its brain.

Fact #349 · Human Body

Humans reached the Moon less than 70 years after powered flight.

Fact #1741 · Human Body

Ants do not have lungs and breathe through small openings in their bodies.

Fact #351 · Human Body

The Olympic Games are held every four years.

Fact #923 · Human Body