Colorado’s landfills generate as much pollution as driving 1 million cars for a year

Proposed rules would force operators to measure methane emissions, fix leaks, and, in some cases, install gas collection systems.

Remember the banana peels, apple cores, and leftover pizza you recently threw in the garbage? Today, your food waste—and your neighbors’—is emitting climate-warming greenhouse gases as it decomposes in a nearby municipal landfill.