The first toothbrushes were made from twigs.

The first carrots people grew were purple or yellow, not orange.

A group of crows is called a murder, and a group of kangaroos is called a mob.

A baby giraffe can stand up within about an hour of being born.

The Moon is slowly moving away from Earth — about 1.5 inches every year.

Jupiter has a giant storm called the Great Red Spot that is bigger than Earth.

A single oak tree can produce thousands of acorns in one year.