The offspring of two sets of identical twins are legally cousins but genetically siblings.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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Nearly 10% of American households dress their pets in Halloween costumes.
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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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The average American eats at McDonalds more than 1,800 times in their life.
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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.
30
Babies crawl an average of 200m a day.
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