The average person produces enough saliva in their lifetime to fill two swimming pools.

The identification of vitamins advanced nutritional science.

Fact #1229 · Science

Nothing can travel faster than light in a vacuum.

Fact #1777 · Science

Vaccines train the immune system to recognize pathogens.

Fact #64 · Science

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

Fact #351 · Science

Fireflies produce light through a chemical reaction.

Fact #384 · Science

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

Fact #1019 · Science

The largest dinosaurs were plant-eating sauropods.

Fact #685 · Science

Fossil evidence suggests some dinosaurs cared for their young.

Fact #703 · Science