There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
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‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
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Women rate men more attractive if other women are looking and smiling at him.
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Chen Guanming, from Jiangsu province in eastern China, traveled by RICKSHAW for 2 years and covered nearly 40,000 miles through 16 countries, surviving flood, war zones and extreme temperatures, finally arriving at the London 2012 Olympics.
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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.
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One in 500 humans has one blue eye and one brown eye.
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