Contact: John Toon
Georgia Institute of Technology
Caption: By studying a set of fossil corals that are as much as 7,000 years old, scientists have dramatically expanded the amount of information available on the El Nino-Southern Oscillation, a Pacific Ocean climate cycle that affects climate worldwide. This video explains how the research was done.
Credit: Inertia Films/Georgia Tech
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Related news release: Coral records suggest that recent El Nino activity rises above noisy background