People with blue eyes are better able to see in the dark.
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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.
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The Japanese commonly put ketchup on their rice.
16
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
More than half the population of Kenya is under the age of 15.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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76% of Americans celebrate New Year's Eve in groups of less than 20.
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