Muhammad is the most common name in the world.
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The typical person spends about 600 hours having sex between the ages of 20 and 70.
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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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Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
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Approximately 365 million people in the world have computers while half of the world's 6.5 billion population has never seen or used a telephone.
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The world's youngest parents were 8 and 9 and lived in China in 1910.
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