The Boltzmann equation for entropy underlies thermodynamics and explains why time has a direction.

Archaeopteryx is considered a transitional fossil between dinosaurs and birds.

Fact #624 · Science

There are more possible shuffles of a deck of cards than seconds since Earth formed.

Fact #1675 · Science

Early dinosaurs were bipedal.

Fact #749 · Science

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

Fact #150 · Science

Fossils are formed when remains are preserved in rock over millions of years.

Fact #631 · Science

The fossil record is incomplete but still informative.

Fact #743 · Science

The human brain operates on about 20 watts of power.

Fact #1744 · Science

Fossilized pollen helps scientists understand ancient ecosystems.

Fact #722 · Science