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  1. Astronomy

    In the Beginning: More early clues for life at home, out there

    Astronomers move closer to understanding how life arose on Earth and how it could arise elsewhere.

    By Ron Cowen
  2. Health & Medicine

    Long-life Link: Gut protein ties low insulin to longevity

    A new link between insulin and aging adds to scientists' understanding of longevity and points to possible targets for life-extending therapies.

    By Patrick Barry
  3. Animals

    Finch Concerts: Female bird brain notes male attention

    Male zebra finches sing slightly differently when serenading a female as opposed to twittering to themselves, and females react to those differences.

    By Susan Milius
  4. Animals

    Love Code: A twist of light only mantis shrimp can see

    Alone in the animal kingdom, these crustaceans signal their presence to potential mates with circularly polarized light.