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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.