Examples are cow, goat, and sheep – ruminant animals ... collected from the roadside before it goes into your garden bed. Composting manure also helps kill off weed seeds that might have ...

18. The facility’s three anaerobic manure digesters extract methane from dairy cow manure. (Nick Rohlman/The Gazette) Colorado-based Gevo, which operates the digester at Winding Meadows and ...