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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Intelligent people have more zinc and copper in their hair.
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15 percent of Americans secretly bite their toes.
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In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
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The first man to swim the length of Great Britain grew a beard to stop jellyfish stinging his face.
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Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
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