There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
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There are more chickens than people in the world.
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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People spend about two weeks of their lives at traffic lights!
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The first foreigner to become a samurai was an African slave.
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In a lifetime, an average person walks the equivalent of 5 equators
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The offspring of two sets of identical twins are legally cousins but genetically siblings.
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