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Contact: John Toon
Georgia Institute of Technology

Examining Fossil Coral

Caption: Georgia Tech associate professor Kim Cobb holds slabs of fossil coral taken from cores drilled in the Line Islands in the mid-Pacific Ocean. Powder from the slabs is examined in the mass spectrometer, which measures the ratio of oxygen isotopes to assess the strength of ENSO during the time the corals were growing.

Credit: Georgia Tech Photo: Gary Meek

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