If two pieces of the same metal touch in space, they permanently bond — a process called cold welding.

Fossils form when organisms are preserved in sediment over millions of years.

Fact #678 · Science

The axolotl can regenerate limbs and even parts of its heart.

Fact #366 · Science

There are invisible colors humans cannot see.

Fact #1710 · Science

The smallpox vaccine led to the global eradication of smallpox.

Fact #1197 · Science

Pterosaurs were flying reptiles, not dinosaurs.

Fact #628 · Science

Atoms are made of protons, neutrons, and electrons.

Fact #60 · Science

DNA carries genetic information in living organisms.

Fact #37 · Science

The Earth's atmosphere traps heat through the greenhouse effect.

Fact #307 · Science