A giraffe's heart can weigh over 20 pounds.

The Tyrannosaurus rex may have had excellent vision.

Fact #687 · Human Body

The FIFA World Cup is held every four years.

Fact #930 · Human Body

Tyrannosaurus rex had teeth that could grow over 12 inches long.

Fact #619 · Human Body

The Peloponnesian War lasted nearly three decades.

Fact #1442 · Human Body

Ankylosaurs had armored bodies and clubbed tails.

Fact #629 · Human Body

Some birds have hollow bones to reduce body weight for flight.

Fact #889 · Human Body

The Thirty Years’ War affected much of Central Europe.

Fact #1171 · Human Body

The Earth is slightly flattened at the poles.

Fact #131 · Human Body