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  1. Trouble with truffles

    A Chinese truffle species has invaded Italy, raising fears that the newcomer could overgrow the Italian black truffle on its home territory.

    By Susan Milius
  2. Chemistry

    Squid beak balances hard and soft

    Yet, the squishy creature’s bite packs a lot of punch.

    By Jennifer Cutraro
  3. Earth

    Challenging ethanol’s dirty reputation

    An inexpensive way to make ethanol from wood chips reduces net greenhouse gas emissions as much as more costly methods.

    By Patrick Barry
  4. Astronomy

    A Phoenix on Mars

    A new robotic lander will search the north polar region of Mars for habitability.

    By Ron Cowen
  5. Animals

    Twee Twee Tweetle

    Bird brains have a separate pathway for the babbling nonsense of baby talk.