Half of all Americans over the age of 55 have no teeth.
39
A hard working adult sweats up to 4 gallons per day.
39
Intelligent people have more zinc and copper in their hair.
233
Men laugh longer, louder, and more often than women.
61
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
If you're over 100 years old, there's an 80% chance you're a woman.
143
