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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.