More and more cities are implementing food scrap collection to reduce landfill methane emissions and help meet climate targets.
The large metal-domed plants are popping up around the French countryside.
The EPA has proposed new limits on methane emissions from oil and natural gas facilities, which already leak more than the agency estimates.
Pound for pound, it's 28 times better at trapping atmospheric heat than CO2.
Methane, the main component of natural gas, is a much more potent warming pollutant than carbon dioxide