The world's tallest man reached 8 feet 11 inches at 21.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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
Men fall in love faster than women do.
32
Humans blink over 10,000,000 times a year!
97
Nearly 10% of American households dress their pets in Halloween costumes.
36
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119