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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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There are more nerve cells in one human brain than there are stars in the Milky Way.