"CO2 is catalyzed into Methane using an 'inorganic catalyst', there is this paper[1] which uses a ruthenium catalyst at 400 degrees C" that either alchemy or mo

"CO2 is catalyzed into Methane using an 'inorganic catalyst', there is this paper[1] which uses a ruthenium catalyst at 400 degrees C" that either alchemy or more energy consuming than agriculture. "Silver-gray ruthenium metal looks like platinum but is rarer," - great to keep the costs down and avoid wars in places like congo eh? ;)