The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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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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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
A silver agouti guinea pig eating grass
Corrosion on Copper Bond Pad
copper
copper
Marianne Nicholson, Kwakwaka'wakw pictograph of a copper on a cliff near Kingcome.