The 'green flash' is a real optical phenomenon — a brief green ray visible at the horizon as the sun sets.

Jellyfish have existed for hundreds of millions of years.

Fact #117 · Nature

The Earth's tilt causes seasonal changes.

Fact #144 · Nature

Flash floods can occur within minutes of heavy rainfall.

Fact #823 · Nature

A spider spins silk that is incredibly strong for its weight.

Fact #528 · Nature

Some plants can survive in salty soil.

Fact #298 · Nature

Lightning strikes the Earth about 100 times per second.

Fact #3397 · Nature

Certain plants close their leaves when touched as a defense response.

Fact #891 · Nature

Some dinosaurs laid eggs in large nesting colonies.

Fact #679 · Nature