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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On average women can hear better than men.
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The average American eats at McDonalds more than 1,800 times in their life.
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Karl Pillemer, a professor, performed a study on thousands of elderly people and what advice they had about life. On happiness, there was a consensus: “the elders viewed happiness as a choice, not the result of how life treats you.”
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Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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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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