The hormone oxytocin, released during physical touch and social bonding, is sometimes called the 'love hormone.'

Sound travels faster in solids than in air.

Fact #54 · Science

Fossilized footprints provide evidence of dinosaur behavior.

Fact #688 · Science

Nothing can travel faster than light in a vacuum.

Fact #1834 · Science

The Earth's atmosphere contains trace gases like argon.

Fact #288 · Science

The Earth's inner core is solid despite extreme heat.

Fact #217 · Science

The polio vaccine drastically reduced cases worldwide.

Fact #1193 · Science

The Cavendish experiment measured the density of the Earth using lead spheres.

Fact #994 · Science

There are invisible colors humans cannot see.

Fact #1710 · Science