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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Forty percent of Americans have never visited a dentist.
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A person swallows approximately 295 times while eating dinner.
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You will experience the billionth second of your life when you are 31 years old.
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According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
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On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
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Approximately 4 to 5% of the U.S. population has one or more clinically significant phobias in a given year. Specific phobias occur in people of all ages. The average age of onset for social phobia is between 15 and 20 years of age, although it can often begin in childhood.
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