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  1. Devil’s Lapdog Gets Its Due: The lab rat bares its DNA to biologists

    Scientists announced that they have deciphered the full DNA sequence of the standard lab rat, setting the stage for a new flurry of biomedical research on this rodent and providing insight into mammalian evolution.

    By John Travis
  2. Materials Science

    Tiny Trouble: Nanoscale materials damage fish brains

    Although nanomaterials could one day lead to more powerful electronics and better medicines, new research shows these tiny materials can also be toxic to fish.

    By Alexandra Goho
  3. Math

    Riding on Square Wheels

    A square wheel can roll smoothly if it travels over a roadway of the right geometric shape.