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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Two in five people in the world marry their first love.
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44% of kids watch television before they go to sleep.
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The higher the income, the more likely an American man will cheat on his wife.
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The world's youngest parents were 8 and 9 and lived in China in 1910.
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During an average lifetime, a man will spend 3,350 hours removing 8.4 meters of stubble.
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Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
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