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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.