Social pain — rejection, exclusion — activates the same brain regions as physical pain.

The Earth's mantle is composed of semi-solid rock.

Fact #329 · Human Body

Cats can rotate their ears independently.

Fact #1336 · Human Body

The Earth's magnetic north pole moves over time.

Fact #311 · Human Body

Octopuses have three hearts and blue blood.

Fact #1 · Human Body

Giraffes have high blood pressure to pump blood to their brains.

Fact #1250 · Human Body

Some insects have compound eyes made of many lenses.

Fact #513 · Human Body

A dog’s nose print is unique, similar to a human fingerprint.

Fact #1347 · Human Body

Some fish can learn by observing other fish.

Fact #1315 · Human Body