Next to bone marrow, hair is the fastest growing tissue in the human body.

The arched lower lip of a whale can often make it look like it is smiling! However, this isn't a "real" smile as the blubber in the head of the whale prevents the muscles of the face from reaching the surface.

The largest hotel in the world is the MGM Grand, which has 5,034 rooms and is located in Las Vegas, Nevada.

AMAZING FACTS