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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Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
131
Dutch, on average are the tallest people.
187
On average, men's noses are 10% larger than women's.
12