"Geoengineering" is what that's called. You can put chemicals in the atmosphere to make it hold less heat, or in the water to encourage algae to use more CO2, o

"Geoengineering" is what that's called. You can put chemicals in the atmosphere to make it hold less heat, or in the water to encourage algae to use more CO2, or put a sunshade in orbit, etc. I think that is discussed less than it should be. I think people avoid the topic because it is of course hugely risky. I would bet that will change because the risk of continuing fossil fuel use is so high and so uncontrollable.