Border collies can learn hundreds of word-object associations.

The barreleye fish has a transparent head and upward-facing eyes.

Fact #1390 · Human Body

Camels have specialized red blood cells that help them survive dehydration.

Fact #856 · Human Body

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

Fact #1675 · Human Body

The invention of dialysis allows patients with kidney failure to survive.

Fact #1219 · Human Body

The Earth's inner core is primarily iron and nickel.

Fact #150 · Human Body

Learning involves changes in neural connections.

Fact #986 · Human Body

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

Fact #86 · Human Body

Sea turtles have existed for over 100 million years.

Fact #1286 · Human Body