Every human spent about half an hour as a single cell.
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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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Most people smile when they are frustrated, according to a study.
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According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
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If a native Hawaiian woman places the flower on her right ear, she is available. (The bigger the flower, the more desperate!)
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About 3000 years ago, most Egyptians died by the time they were 30!
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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.
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