Sharks existed before trees evolved.

The touch-me-not plant (Mimosa pudica) closes its leaves when touched and remembers the stimulus for weeks.

Certain plants have waxy leaves to reduce water loss.

A bolt of lightning is only about as wide as a thumb — the bright flash makes it appear much wider.

Lightning can heat air hotter than the surface of the Sun.

The flying frog of Southeast Asia glides between trees using webbed feet as parachutes.

Carbon sequestration by trees depends heavily on species, age, and climate — old-growth forests store more carbon than plantations.

In 1908, a massive explosion flattened forests in Siberia in what is known as the Tunguska event.

Deforestation is responsible for about 10% of global greenhouse gas emissions annually.