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  1. Humans

    The Dead Sea Scrolls contain genetic clues to their origins

    Animal DNA is providing researchers with hints on how to assemble what amounts to a giant jigsaw puzzle of ancient manuscript fragments.

    By Bruce Bower
  2. Neuroscience

    A new 3-D map illuminates the ‘little brain’ within the heart

    Microscopy and genetic studies yield a comprehensive map of the nerve cells found in the heart of a rat.

    By Laura Sanders
  3. Earth

    Chicxulub collision put Earth’s crust in hot water for over a million years

    An asteroid impact 66 million years ago caused hot fluids to circulate in the crust, creating conditions that may have been ideal for microbial life.