Methane climate change risk suggested by proof of redox cycling of humic substances

Disruption of natural methane-binding process may worsen climate change, scientists have suggested, painting a stark warning on the possible effects of gases such as methane -- which has a greenhouse effect 32 times that of carbon dioxide. Researchers have shown that humic substances act as fully regenerable electron acceptors which helps explain why large amount of methane are held in wetlands instead of being released to the atmosphere.

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