The Atacama Desert receives on average less than 1 mm of rain per year in its driest regions.

A sloth can take up to a month to digest a single meal.

Fact #441 · Human Body

Hyenas have powerful jaws adapted for crushing bone.

Fact #1274 · Human Body

The human body contains trillions of microorganisms.

Fact #233 · Human Body

In 1920, a town in Minnesota briefly elected a bear as mayor in a publicity stunt.

Fact #773 · Human Body

The human brain weighs about three pounds on average.

Fact #244 · Human Body

In 2001, a Norwegian man survived a fall through ice by floating in near-freezing water.

Fact #800 · Human Body

Rats can learn complex maze patterns quickly.

Fact #1333 · Human Body

The first artificial heart was implanted in the 1980s.

Fact #1209 · Human Body