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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A study had men report their own penis size, and the average was found to be 6.1-6.5 inches. A subsequent clinical study actually measured penises, and found the average size to be 5.1-5.7 inches.
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Every workday, 6.7 million people commute to Manhattan!
26
Girls have more tastebuds than boys.
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The offspring of two sets of identical twins are legally cousins but genetically siblings.
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The “cheerleader effect”, the theory that girls look more attractive in groups, is scientifically proven.
8
You can only remember 4 things at a time.
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