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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.