More than 4.4billion prescriptions were dispensed within the United States in 2016.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Einstein - Science is the work of...
(a) The Petralona cranium from Greece. (b) The Steinheim cranium from Germany.
Aztecs confront the Spaniards, from Diego de Durán's History of the Indies of New Spain.