Horses communicate with their ears — the direction they point conveys attention and emotion.

The vaccination syringe improved medical delivery methods.

Fact #1576 · Human Body

The first forests appeared during the Devonian period.

Fact #710 · Human Body

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

Fact #1675 · Human Body

Hyenas have powerful jaws adapted for crushing bone.

Fact #1274 · Human Body

The first successful kidney transplant occurred in 1954.

Fact #1221 · Human Body

The Earth is slightly flattened at the poles.

Fact #131 · Human Body

Certain parrots can learn to mimic human speech.

Fact #1258 · Human Body

Your brain uses patterns to recognize faces almost instantly.

Fact #1752 · Human Body