Approximately 70,000 people in the U.S. are both blind and deaf!
7
More boys than girls are born during the day; more girls are born at night.
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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.
9
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
Only about 2% of the world population has green eyes.
36
35% of the people using personal ads for dating are already married!
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