In a lifetime, an average human produces 10,000 gallons of saliva.

The Boston University Bridge (on Commonwealth Avenue, Boston, Massachusetts) is one of the few places in the world where a boat can sail under a train driving under a car driving under an airplane.

There are species of fish that can walk on land in search of water when its water source dries up. Some can survive as long as three days on land such as the snakehead fish.

AMAZING FACTS