Deep sleep is when the brain performs its most intensive memory consolidation and repair.

Particles can exist in multiple states until observed.

Fact #1824 · Science

Lightning can travel from the ground up into clouds.

Fact #255 · Science

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

Fact #1727 · Science

The door-in-the-face technique uses large requests to gain smaller agreements.

Fact #1502 · Science

The Earth's atmosphere is composed mostly of nitrogen and oxygen.

Fact #80 · Science

In 1924, a scientist attempted to transmit sound to plants to study their response.

Fact #993 · Science

Antiretroviral therapy transformed HIV from fatal to manageable.

Fact #1208 · Science

The discovery of Helicobacter pylori changed treatment for ulcers.

Fact #1215 · Science