There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
All babies are color blind when they are born.
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Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
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Men fall in love faster than women do.
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Women rate men more attractive if other women are looking and smiling at him.
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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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The world's shortest man measures only 21.5 inches.
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