It's been said that the formation of the Himalayan and the Appalachian mountain ranges led to two individual ice ages. Due to the elements in the newly exposed silicate rock or limestone fusing with CO2, pulling it from the atmosphere.

How would you create a mountain range as solution to global whatever. Bombs? Where could you? Are there any spots on Earth where plates are slowly merging towards orogenesis? How do you speed that up? You can ignore human lives if you want, and that it's a laughable solution. Just an interesting one. Maybe it was like a last ditch effort.