Insulin was first used to treat diabetes in the early 1920s.

In 1909, Robert Millikan measured the charge of the electron in the oil-drop experiment.

Fact #1004 · Science

There are more possible chess games than atoms.

Fact #1694 · Science

Positive reinforcement can strengthen certain behaviors.

Fact #964 · Science

Fireflies produce light through a chemical reaction.

Fact #384 · Science

The discovery of blood types improved transfusion safety.

Fact #1226 · Science

Antifreeze proteins allow Antarctic fish to avoid ice crystal formation.

Fact #872 · Science

The discovery of insulin earned a Nobel Prize in 1923.

Fact #1207 · Science

Lightning can heat air hotter than the surface of the Sun.

Fact #1807 · Science