An octopus has three hearts — two pump blood to the gills and stop beating when the octopus swims.

The Human Genome Project mapped the entire human genetic sequence.

Fact #1018 · Human Body

The gulper eel has a large mouth that allows it to swallow prey bigger than its body.

Fact #1386 · Human Body

There are more possible shuffles of a deck of cards than seconds since Earth formed.

Fact #1675 · Human Body

The vaccination syringe improved medical delivery methods.

Fact #1576 · Human Body

Some fish can learn by observing other fish.

Fact #1315 · Human Body

The Thirty Years’ War affected much of Central Europe.

Fact #1171 · Human Body

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

Fact #1741 · Human Body

The human eye can distinguish millions of colors.

Fact #74 · Human Body