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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The human body produces and destroys 15 million blood cells every second.
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.