Greg Langmo’s work is the centerpiece of America’s Thanksgiving dinner table. But finding a use for the by-products of his family-run turkey farm near Litchfield, Minn., has long been a challenge for ...

This is a two-part project originating in Australia. The first is a Melbourne-based effort to collect dog droppings and turn them into biogas for local use. The secondary effect would be to alert dog ...

It’s official: Cargill’s new energy idea is a bunch of crap. Minnetonka-based Cargill Inc. late last year fired up an $8.5 million anaerobic digester and generator facility that transforms turkey ...

Human waste is certainly plentiful, but clean? In fact, it is -- if used the right way. That's why some British utilities are planning to harness the biomethane gas produced at sewage treatment plants ...