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Did you know?
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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There are more nerve cells in one human brain than there are stars in the Milky Way.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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.