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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Dolly Dimples, a 555 lbs. woman, lost 443 lbs in one year by eating nothing but baby food.
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Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
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The world's youngest parents were 8 and 9 and lived in China in 1910.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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The world's shortest man measures only 21.5 inches.
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