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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Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
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Children's sense of smell is better than adults'.
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According to Harris Interactive, 70% of men and 57% of women shower daily.
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Americans collectively eat one hundred pounds of chocolate every second.
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Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
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40% of people who are rejected in romantic love slip into clinical depression.
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