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  1. Better by Design

    Avoiding undesirable traits from the start could help chemists make molecules less meddlesome.

    By Rachel Ehrenberg
  2. Life

    Dining In

    A process called autophagy, is a means of self-preservation, cleansing and stress management for a cell.With their sights on fighting disease, scientists are now uncovering the mechanics that keep autophagy in balance.

    By Tina Hesman Saey

  3. Ice in Motion

    As frozen lands disintegrate, researchers rush to catch the collapse.

    By Alexandra Witze

  4. Science Past from the issue of March 25, 1961

    CUT-OFF LIVER KEPT ALIVE — Three surgeons have completely isolated the liver from dogs, and with heart-lung machines have kept the animals and their livers alive for as long as eight hours.