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Urban tree canopies may be threatened by fugitive methane exposure from leaky natural gas distribution systems. A case-control study was conducted to compare soil natural gas exposure in sidewalk tree pits of healthy and dead or dying trees in Chelsea, Massachusetts, during summer 2019.

Claire Schollaert, Robert C. Ackley, Andy DeSantis, Erin Polka and Madeleine K. Scammell View Resource
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