The strongest known biological material is the teeth of a limpet, a small marine snail.

Storm surges are often responsible for hurricane-related flooding.

Bioluminescence allows some deep-sea creatures to produce light.

Apples float in water because 25% of their volume is air.

A flamingo’s pink color comes from its diet.

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

Sharks have been on Earth longer than trees — sharks evolved around 450 million years ago, trees around 350 million.

Tyrannosaurus rex had one of the strongest bites of any land animal.

Coral reefs are built by tiny animals called coral polyps.