Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
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People with blue eyes are better able to see in the dark.
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About 2/3 of American men prefer boxers to briefs.
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Babies cry but they don't produce tears until one to three months after birth.
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Babies crawl an average of 200m a day.
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According to CNN national security correspondent David Ensore, as of 2002 bin Laden had married four women and fathered roughly 25 or 26 children.
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