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  1. Stranded: A whale of a mystery

    Scientists generally agree that sonar can trigger strandings of certain whales, but no one really knows what leads these deep divers to the beach.

    By Rachel Ehrenberg
  2. Physics

    Large Hadron Collider

    When the Large Hadron Collider powers up this fall, protons moving at almost the speed of light will collide with energies high enough, physicists hope, to solve matter’s biggest mysteries.

    By Ron Cowen
  3. Health & Medicine

    Sick and down

    To fight off an infection or illness, the body shifts into a slow-down mode that mirrors some symptoms of depression. In fact, scientists now think the immune response itself may even cause the mood disorder.