Landfills in Colorado release millions of metric tons of greenhouse gasses each year as organic waste including food, paper and yard trimmings decomposes into the soil, contributing to global warming and harming human health. Colorado, as part of its multi-pronged approach to eliminate 90% of the state’s greenhouse gas emissions by 2050, is planning to address those landfill emissions next year with rules that could require operators to install new equipment to curb the amount of methane they release and to increase monitoring technology to better track just how much is being generated. The state’s Air Quality Control Commission is expected to create the new rules in August, which would place Colorado among the nation’s first states to enact more stringent regulations on landfills than the U.S.