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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If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
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The Japanese commonly put ketchup on their rice.
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Every human spent about half an hour as a single cell.
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Babies that are breastfed are more likely to be slimmer as adults than those that are not breastfed.
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According to Harris Interactive, 70% of men and 57% of women shower daily.
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Each year, around 24,000 Americans are bitten by rats!
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