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Contact: John Toon
Georgia Institute of Technology

Fossil Coral Cores

Caption: Fossil coral cores taken from the Line Islands provide information about the strength of the El Nino Southern Oscillation (ENSO) for periods of time as much as 7,000 years ago. The paper rules track the direction of coral growth.

Credit: Georgia Tech Photo: Gary Meek

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Related news release: Coral records suggest that recent El Nino activity rises above noisy background

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