Notebook

Science Past from the issue of November 18, 1961

NEW EVIDENCE FOUND OF EXPANDING UNIVERSE — The universe is expanding, then collapsing again after a long time, evidence from photographs taken with the 200-inch telescope atop Mt. Palomar indicate. Dr. William A. Baum of Mt. Wilson and Palomar Observatories, Pasadena, Calif., said that present-day observations are not compatible with a steady-state universe in which […]

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 […]

Science Future for November 5, 2011

November 15 The DuPont Challenge science essay competition opens for entries.