The odds of randomly guessing a correct 4-digit PIN are 1 in 10,000.

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

Fact #1502 · Science

The Earth's magnetic field originates in its molten outer core.

Fact #234 · Science

Nothing can travel faster than light in a vacuum.

Fact #1739 · Science

Particles can exist in multiple states until observed.

Fact #1804 · Science

The Earth's tilt is responsible for seasonal climate patterns.

Fact #222 · Science

The smallpox vaccine led to the global eradication of smallpox.

Fact #1197 · Science

Fossils form when organisms are preserved in sediment over millions of years.

Fact #678 · Science

The human brain can process visual information in as little as 13 milliseconds.

Fact #941 · Science