We use corn because it is sustainable, renewable, biogenic and has the natural ability to capture carbon. The best thing to do with municipal solid waste is to reduce or eliminate it, by diverting garbage from landfills and reusing and recycling more efficiently. The second-best usage is to capture landfill methane for local direct energy production. If municipal solid waste can be separated from fossil-based products such as plastic bottles, then there is potential for its use as a feedstock. But since GHG emissions are caused by the burning of petroleum/fossil-based products, burning plastics made from fossil carbon also contributes to the GHG footprint. These feedstocks need to be tracked and proven to be sustainable and renewable.