Remember all our heat comes from the sun. The cheapest climate mitigation may be to just block some sunlight: https://en.wikipedia.org/wiki/Solar_geoengineerin

Remember all our heat comes from the sun. The cheapest climate mitigation may be to just block some sunlight: https://en.wikipedia.org/wiki/Solar_geoengineering https://en.wikipedia.org/wiki/Solar_geoengineering