In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Cleaning Agent
Morris and Company, Sussex Rush-Seated Chairs.
NADH acts as a reducing agent in several reactions
Work is done by an external agent
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What is the strongest oxidizing agent of the following set: MnCl2, Mn(OH)3, MnO2, KMnO4?