The familiar sounds of your heart are made by the heart's valves as they open and close.
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There are more bacteria in your mouth than there are people in the world.
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About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.
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The human body produces and destroys 15 million blood cells every second.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Large male reindeer
Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
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Nephroblastoma. A sectioned kidney reveals the presence of a very large tumor, which arose from feta
Effect of a Black Hole’s Tidal Force on Infalling Matter