Proposal: Carbon dioxide and methane in the atmosphere block the escape of heat into space  So emission of these greenhouse gases contributes to global warming  In order to reduce global warming, emission of greenhouse gases needs to be reduced  Ttherefore, the methane now emitted from open landfills should instead be burned to produce electricity
Objection: The burning of methane generates carbon dioxide that is released into the atmosphere
Every time a human being or other mammal exhales, there is some carbon dioxide released into the air.