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Everyone has one nostril that is larger than the other.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.