Carbon monoxide is probably preferable to methane in the atmosphere. (attached link discusses carbon dioxide vs methane as greenhouse gases, carbon monoxide is

Carbon monoxide is probably preferable to methane in the atmosphere. (attached link discusses carbon dioxide vs methane as greenhouse gases, carbon monoxide is less troublesome than CO2) https://www.sciencedaily.com/releases/2014/03/140327111724.htm https://www.sciencedaily.com/releases/2014/03/140327111724.h... This is my optimistic take! :D