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  1. Earth

    Bubblin’ plume

    Sonar survey spots previously unknown plume in the depths off California.

    By Sid Perkins

  2. Disaster Goes Global

    The eruption in 1600 of a seemingly quiet volcano in Peru changed global climate and triggered famine as far away as Russia

    By Sid Perkins
  3. 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
  4. Earth

    Hazy changes on high

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