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

The Human Genome Project mapped the entire human genetic sequence.

Fact #1018 · Science

In 1938, Otto Hahn's work led to the discovery of nuclear fission.

Fact #1015 · Science

The Müller-Lyer illusion makes lines of equal length appear different.

Fact #1464 · Science

The Cambrian explosion saw rapid diversification of life.

Fact #708 · Science

Volcanic eruptions can produce lightning within ash clouds.

Fact #844 · Science

Archaeopteryx is considered a transitional fossil between dinosaurs and birds.

Fact #624 · Science

Lightning can travel from the ground up into clouds.

Fact #255 · Science

Some species of jellyfish are biologically immortal under certain conditions.

Fact #159 · Science