Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The horizontal fraction bar was introduced by the Arabs.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
