The average cloud weighs 1.1 million pounds but floats because the air below it is denser.

A woodpecker's skull absorbs shock from repeated pecking.

Fact #393 · Nature

Some species of jellyfish glow in the dark.

Fact #357 · Nature

Jellyfish have existed for hundreds of millions of years.

Fact #117 · Nature

Certain plants release chemicals to deter competing vegetation.

Fact #868 · Nature

The ozone layer helps protect Earth from harmful ultraviolet radiation.

Fact #52 · Nature

The Amazon rainforest plays a role in carbon cycling.

Fact #236 · Nature

The Amazon rainforest influences global weather patterns.

Fact #206 · Nature

There is enough gold inside Earth to coat the entire planet’s surface.

Fact #2722 · Nature