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State of the Planet

News from the Columbia Climate School

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Stacy Morford

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Forty years was just the beginning. Follow the Tree Ring Lab's work and learn more about its technology and history at http://www.ldeo.columbia.edu/tree-ring-laboratory

Forty years was just the beginning. Follow the Tree Ring Lab’s work and learn more about its technology and history at http://www.ldeo.columbia.edu/tree-ring-laboratory

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