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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.