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  1. Chopping up a microbial tail

    An enzyme made by immune cells destroys the proteins that make up bacterial tails.

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  2. Earth

    Whale meat in Japan is loaded with mercury

    Some people in Japan who eat dolphins and other toothed whales are ingesting amounts of mercury that exceed legal health limits.

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  3. Astronomy

    Finding a nearby star

    Astronomers have discovered a star that may be among the very closest known to us.

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  4. Ecosystems

    Zebra mussels to the rescue

    Bioengineers have harnessed zebra mussels to help avert algal blooms by cleaning particles, including algae, from the water.