The offspring of two sets of identical twins are legally cousins but genetically siblings.
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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
You will experience the billionth second of your life when you are 31 years old.
21
People who have a strong friendship possess the ability to communicate with one another through facial expressions.
46
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
The world's youngest parents were 8 and 9 and lived in China in 1910.
130
47% of people have a nightmare at least once a month.
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