A study conducted by agronomists at Iowa State University found that the slurry left over from turning farm waste into fuel ...

Anaerobic digestion is the most common process used to reduce sewage sludge volume in the world. Digestion is a low-tech treatment process which has two high-volume byproducts which are relevant to ...

Americans waste a lot of food — about 133 billion pounds a year, or roughly one-third of all the food produced in the U.S. In addition to squandering money and throwing away a precious resource, all ...