Evan Thaler, one of the study’s authors, extracting soil cores from Doolittle Prairie, Iowa. (IMAGE)

University of Massachusetts Amherst

Evan Thaler, one of the study’s authors, extracting soil cores from Doolittle Prairie, Iowa.

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Evan Thaler, one of the study’s authors, extracting soil cores from Doolittle Prairie, Iowa.

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Isaac Larsen

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