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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.