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  1. Earth

    Shaky Forecasts

    Despite past failures, geophysicists think earthquake prediction might still be possible.

    By Kristina Bartlett Brody

  2. What do you see?

    Emotion may help the visual system jump the gun to predict what the brain will see.

    By Jenny Lauren Lee

  3. Pearls Unstrung

    For a while, the Great Lakes weren’t connected by rivers and Niagara Falls was just a trickle.

    By Sid Perkins
  4. Tech

    Isotope crisis threatens medical care

    Global production of the feedstock for the leading medical-imaging isotope is low and erratic, putting health care in jeopardy.

    By Janet Raloff

  5. Balancing gains and threats in cardiovascular care

    Clyde W.