Lasers are limited in length by the coherence length of their light source.

The Earth's inner core is primarily iron and nickel.

Fact #150 · Science

The human brain operates on about 20 watts of power.

Fact #1744 · Science

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

Fact #993 · Science

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

Fact #678 · Science

Water expands when it freezes, which is why ice floats.

Fact #9 · Science

Handwashing protocols significantly reduced hospital infections.

Fact #1214 · Science

The Human Genome Project mapped the entire human genetic sequence.

Fact #1018 · Science

Lightning can heat the air it passes through to temperatures hotter than the surface of the Sun.

Fact #5 · Science