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
Senegalese women spend an average of 17.5 hours a week just collecting water.
27
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
Intelligent people have more zinc and copper in their hair.
233
Children's sense of smell is better than adults'.
860
The average person falls asleep in seven minutes.
115
Women have a slightly higher average IQ than men.
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