Credit: Elizabeth Ouzts

Hog waste-to-gas: Renewable energy or more hot air?

Biogas could clean up manure and mitigate methane; but economics and inconsistent regulations remain hurdles

DURHAM, NC—On a school night in early spring, a rowdy collection of environmental activists, local residents, and Duke University faculty and students packed a public forum, railing against the school's plan to build a new $55-million gas plant on campus.

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