Denver and WM, one of the nation’s largest waste companies, will soon turn the city landfill into Colorado’s first garbage dump that converts methane into renewable natural gas — repurposing a greenhouse gas that contributes to global warming and harms human health.

The project was announced last week as Colorado’s air quality regulators are set to create new regulations aimed at reducing the amount of methane oozing from the state’s 51 landfills. Colorado’s landfills release millions of metric tons of greenhouse gases each year, and the state wants to reduce those emissions as part of its multipronged approach to eliminate 90% of the state’s greenhouse gas emissions by 2050 .

The methane is created as organic matter like food, yard debris and paper decomposes.

“The catchphrase of m

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