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  1. Health & Medicine

    Ketones to the Rescue

    Medical researchers are investigating a slew of possible applications for acids called ketones, which the body produces naturally when deprived of carbohydrates and protein.

    By Ben Harder
  2. Math

    Megaprime Champion

    The catalog of humongous prime numbers has a new entry–the champion prime (220996011 – 1), which has 6,320,430 decimal digits. It’s the largest known prime number and the 40th Mersenne prime ever found. A prime is a whole number (other than 1) that is evenly divisible by only itself and 1. Written in the form […]

    By Ivars Peterson
  3. Humans

    From the December 2, 1933, issue

    SCIENTISTS UNLEASH LARGEST ATOM-ATTACKING MACHINE Seven million volts, mans closest approach to the voltage of natures lightning, flashed across the gigantic ball terminals of sciences greatest generator, erected by Massachusetts Institute of Technology physicists in Col.