Federal officials estimate about a quarter of the trash in U.S. landfills is food waste, which produces methane, a potent greenhouse gas and significant contributor to climate change. Foodservice operators who want to do something about that might consider bringing in an in-house waterless digester. BioGreen 360 makes a relatively small unit (about the size of a washing machine) called the BG3, which can process up to 600 pounds of organic waste in 24 hours. Microbes turn the waste into liquid that can be converted into organic fertilizer or biogas—producing no methane (and no stink). Good for hotels, food halls or other commercial settings with multiple outlets.