Bio CCS using the ocean. Nothing else can be cheaper than letting nature do 99% of the work. That is if there's the will to do it. Also, Putin is mostly fine w

Bio CCS using the ocean. Nothing else can be cheaper than letting nature do 99% of the work. That is if there's the will to do it. Also, Putin is mostly fine with climate change because Russia (and possibly Canada) will be arguably the disproportionate net winner in a 2.5 C world.