

Landfills don’t necessarily sequester the CO2 for long. Often, they release the carbon as methane. Methane is a much worse greenhouse gas than CO2, and so landfills often pipe the methane to be burned. The amount of CO2 released for every unit of methane is a smaller greenhouse concern than the original methane, but none of this should be considered sequestration.
As things are, every Millennial and anyone in a later generation is going to have to be a millionaire to retire to a reasonable level of comfort. It could also be true that there are no ethical millionaires. Where does that leave us?