The average person walks the equivalent of twice around the world in a lifetime
69
Half of all Americans over the age of 55 have no teeth.
39
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
58
According to a study, women ages 22 to 30 with no children and no spouse earned a higher median income than comparable men in 39 of the 50 largest U.S. cities in 2008.
9
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
People in parts of Western China put salt in their tea instead of sugar.
16
A hard working adult sweats up to 4 gallons per day.
39