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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About 2/3 of American men prefer boxers to briefs.
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More than half the population of Kenya is under the age of 15.
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Children's sense of smell is better than adults'.
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Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
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In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
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People with blue eyes are better able to see in the dark.
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