Prime numbers never end — Euclid proved their infinity around 300 BC.

The Earth's interior is layered into crust, mantle, and core.

Fact #338 · Science

Fireflies produce light through a chemical reaction.

Fact #384 · Science

Particles can exist in multiple states until observed.

Fact #1824 · Science

Heatwaves can pose serious risks to human health.

Fact #821 · Science

The Earth's magnetic field is generated by its outer core.

Fact #331 · Science

Louis Pasteur advanced the understanding of germ theory.

Fact #1191 · Science

Antifreeze proteins allow Antarctic fish to avoid ice crystal formation.

Fact #872 · Science

There are invisible colors humans cannot see.

Fact #1710 · Science