One in 500 humans has one blue eye and one brown eye.
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The average American eats at McDonalds more than 1,800 times in their life.
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A man is more likely to get a woman's phone number if he is accompanied by a dog.
20
Women rate men more attractive if other women are looking and smiling at him.
17
Intelligent people have more zinc and copper in their hair.
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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.
34