Tardigrades have survived exposure to the vacuum of outer space — the only animal known to do so unprotected.

Energy and mass are interchangeable.

Fact #1847 · Science

Atoms are made of protons, neutrons, and electrons.

Fact #60 · Science

Rats have demonstrated empathy in laboratory studies.

Fact #1308 · Science

The Earth's rotation is responsible for the Coriolis effect.

Fact #261 · Science

The introduction of antiseptic surgery reduced infection rates.

Fact #1202 · Science

Ants do not have lungs and breathe through small openings in their bodies.

Fact #351 · Science

In 1996, Dolly the sheep became the first cloned mammal from an adult cell.

Fact #1019 · Science

Time moves more slowly in stronger gravitational fields.

Fact #1618 · Science