Dogs have two sets of teeth, just like humans. They first have 30 "puppy" teeth, then 42 adult teeth.

Because of its enormous size, the Pentagon operates much like a small city; it has its own shopping mall, power plant, water and sewage facilities, medical clinic, fire station, police force and a mayor.

Mount Katahdin in Maine is the first place in the U.S. to get sunlight each morning.

AMAZING FACTS