The low frequency call of the humpback whale is the loudest noise made by a living creature.

Adults laugh only about 15 to 100 times a day, while six-year-olds laugh an average of 300 times a day.

Between 1979 and 1999, the planet Neptune was farther from the Sun than Pluto. This won't happen again until 2227.

A M A Z I N G   F A C T S