The offspring of two sets of identical twins are legally cousins but genetically siblings.
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People who are more likeable and attractive are generally perceived as more intelligent. This is called the “Halo Effect.”
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Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
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It is estimated that at any one time, 0.7% of the world's population are drunk.
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Men laugh longer, louder, and more often than women.
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On average women can hear better than men.
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Every workday, 6.7 million people commute to Manhattan!
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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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