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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.