Most people smile when they are frustrated, according to a study.
15
People spend about two weeks of their lives at traffic lights!
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There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
There are more than 150 million sheep in Australia, and only some 20 million people.
247
In 1850, only 8% of the people in California were women.
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