Most digesters are in dairies that capture methane from lagoons of cow manure and turn it into biofuel. Liquified cow manure commonly is stored in a covered digester where microbes from the animals' ...

A Danish company’s plans to turn cow manure into renewable energy in Minnesota and Wisconsin’s dairy country have tanked, at least for now. Nature Energy planned to build several large-scale anaerobic ...

A growing national market in the proceeds from manure digesters—a technology developed to rein in emissions and fight global warming—is sowing worry that the economic paybacks could undercut U.S.

A new study from the University of California, Riverside offers a nuanced assessment of dairy manure digesters, finding the systems significantly reduce methane emissions overall but can lose much of ...