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  1. Earth

    Rapid evolution may be reshaping forest birds’ wings

    Logging during the last century might have driven birds in mature boreal forests toward pointier wings while reforestation in New England led to rounder wings.

    By Susan Milius
  2. Earth

    Hazy changes on high

    A big boost in coal burning, especially in China, is adding aerosols to the stratosphere.

    By Sid Perkins
  3. Earth

    Shaky Forecasts

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

    By Kristina Bartlett Brody

  4. What do you see?

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

    By Jenny Lauren Lee

  5. Pearls Unstrung

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