Prehistoric reptiles dominated land ecosystems.

Some insects can walk on water due to surface tension.

Fact #374 · Nature

Avocados are technically berries — and they evolved to be eaten by giant ground sloths, which are now extinct.

Fact #3416 · Nature

The Arctic Circle experiences extreme variations in daylight.

Fact #63 · Nature

Tardigrades can survive extreme radiation, freezing, and even space.

Fact #1900 · Nature

Volcanoes form where magma reaches the surface.

Fact #326 · Nature

Hydrothermal vents can reach temperatures hotter than boiling water at the surface.

Fact #1389 · Nature

Certain fish form schools to reduce predation risk.

Fact #479 · Nature

Caribou migrate in large herds across Arctic regions.

Fact #1277 · Nature