The vampire bat's saliva contains an anticoagulant — now used as a drug to treat stroke patients.

Insulin was first used to treat diabetes in the early 1920s.

Fact #1189 · Science

Many coins are made of precious metals such as gold and silver which makes their value higher than face value.

Fact #1672 · Science

Nothing can travel faster than light in a vacuum.

Fact #1834 · Science

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

Fact #941 · Science

Electricity involves the movement of charged particles.

Fact #29 · Science

The Ames room illusion distorts perceived size and distance.

Fact #1490 · Science

Dark matter is believed to make up most of the universe’s mass but has not been directly observed.

Fact #1594 · Science

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

Fact #1675 · Science