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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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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Babies crawl an average of 200m a day.
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City dwellers have longer, thicker, denser nose hairs than country folks do.
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35% of the people using personal ads for dating are already married!
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The average American spends a third of their overall time online playing games and using social networks.
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