The golden rule appears in virtually every major world religion and philosophy.

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

Fact #1392 · Human Body

The human brain contains roughly 86 billion neurons.

Fact #8 · Human Body

Water covers more than 70% of Earth's surface.

Fact #86 · Human Body

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

Fact #1741 · Human Body

The human eye can detect a single photon.

Fact #1706 · Human Body

Octopuses have three hearts and blue blood.

Fact #1 · Human Body

Insulin was first used to treat diabetes in the early 1920s.

Fact #1189 · Human Body

The average adult human has 32 teeth.

Fact #152 · Human Body