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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 most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.