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  1. Physics

    The Power of Induction

    A new technology based on classical electromagnetic theory uses oscillating magnetic fields to transfer electric power wirelessly across a room.

    By Davide Castelvecchi
  2. Math

    Mathematical Lives of Plants

    Mathematical models that capture the essence of biological growth mechanisms are beginning to reveal how plants develop structures with intriguingly elegant geometries.

    By Julie Rehmeyer
  3. Astronomy

    Help Spot Galaxies

    Although computer programs can be written to sort galaxies into general categories, they would inevitably throw out the unusual, the weird and the wonderful, astronomers say. Because the human brain is much better at recognizing patterns, astronomers launched a site this week recruiting the public to help identify spiral galaxies on sky photos.