Most people smile when they are frustrated, according to a study.
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Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
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As many as one third Americans flush the toilet while they are still on it.
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Intelligent people have more zinc and copper in their hair.
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Identical twins do not have identical fingerprints.
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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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