One of the oldest climate change experiments has led to a troubling conclusion: In a 26-year soil warming experiment in a mid-latitude hardwood forest, warming has resulted in a net carbon loss from the soil. The results support projections of a long-term, positive carbon feedback as the world warms

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One of the oldest climate change experiments has led to a troubling conclusion: In a 26-year soil warming experiment in a mid-latitude hardwood forest, warming has resulted in a net carbon loss from the soil. The results support projections of a long-term, positive carbon feedback as the world warms