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  1. Health & Medicine

    Obesity messes with the brain

    Excess weight may compromise memory and concentration, possibly by spurring inflammation that damages white matter.

    By Janet Raloff

  2. Big Fishing Yields Small Fish

    Researchers map predator loss and predict unstable oceans.

    By Janet Raloff

  3. Star Cents

    How the cost of NASA’s next big space telescope skyrocketed.

    By Ron Cowen

  4. Backup Bees

    Luring and taming wild pollinators for help on the farm.

    By Susan Milius

  5. Science Future for April 9, 2011

    April 16 The American Museum of Natural History in New York City opens an exhibit exploring the world’s largest dinosaurs.