Anaerobic digesters solve a few problems at once -- generate renewable energy, divert food waste from landfills and cut down on harmful emissions.
One expert says current technologies could transform organic waste into enough natural gas to replace half the diesel fuel used in the US transportation sector.
After facing community opposition, plans for a massive new food hub in Louisville will no longer include a composting facility to turn food waste into energy.
Food waste accounts for 3.3 billion tons of greenhouse gasses a year. Meanwhile 870 million people go hungry every day.
In an effort to reduce the state's additions to landfills, Massachusetts will become the first state to ban food waste from being thrown into the trash.