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  1. Science Past from the issue of November 4, 1961

    ARTIFICIAL HEART VALVE — A previously hopeless condition of the heart — a defective heart valve — can now be corrected by successful surgery, it was reported at the American Heart Association meeting in Miami Beach, Fla. Many of the 500 gravely ill patients described by three teams of surgeons who did partial or total […]

    By Science News

  2. Science Future for November 5, 2011

    November 15 The DuPont Challenge science essay competition opens for entries. Learn more at thechallenge.dupont.com November 17 The Royal Society Winton Prize for Science Books is announced. See bit.ly/bookprz   November 19 The “Beyond Earth” exhibit opens at the American Museum of Natural History in New York City.