by Mike Barrett, Natural Society:
Food waste is a huge problem for the United States. As a wealthy nation, we often take our supermarkets full of food for granted. Thankfully there are many initiative popping to tackle this problem, with one example being seen at Salt Lake City, Utah, where a facility will reduce landfill waste and turn food waste into renewable energy. 
Set to open in late 2018, the facility will use anaerobic digesters to grind and liquefy food waste, then use water, heat and bacteria to convert it into methane gas. The methane will eventually be used as natural gas and the bio-solids will be converted into fertilizer.
Anaerobic digestion is biological process in which microbes break down biodegradable material without oxygen.