It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
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In 2002, Kenyan Maasai tribespeople donated 14 cows to the US to help with the aftermath of 9/11.
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Males sweat 40% more than females.
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If you're over 100 years old, there's an 80% chance you're a woman.
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Every workday, 6.7 million people commute to Manhattan!
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Dutch, on average are the tallest people.
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