Here we have an interesting and seldom acknowledged facet of climate change: landfills generating significant quantities of methane. Which could be a more dangerous greenhouse gas in contrast to carbon emissions.
Of course it's moire dangerous because CO2 is used by plants, methane is not. It also smells bad.
There's one interesting feature that it has which is combustion that turns it into CO2 and H20 and produces heat in the process. If we were able to separate organic components from our garbage and put it in enclosed compartments to decompose, we'd be able to gather methane and use it for heating instead of propane, butane, petroleum gas and all that.