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 Haiti, only 1 out of every 200 people own a car.
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People with blue eyes are better able to see in the dark.
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Up to the age of six or seven months a child can breathe and swallow at the same time. An adult cannot do this.
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Half of all Americans over the age of 55 have no teeth.
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Babies crawl an average of 200m a day.
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According to CNN national security correspondent David Ensore, as of 2002 bin Laden had married four women and fathered roughly 25 or 26 children.
54