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  1. Earth

    Understanding storm spin-offs

    Meteorologists seeking to better predict tornadoes probe the differences between tempests that spawn twisters and those that don't.

    By Alexandra Witze
  2. Humans

    Iron Age goldsmith retooled

    An ancient warrior's tomb brings back jewelry making from 2,400 years ago.

    By Bruce Bower

  3. Better by Design

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

    By Rachel Ehrenberg
  4. 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

  5. Ice in Motion

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