Quiet_Reason, thank you for your appearance, and for participating in this discussion. You always elevate the discussion with your knowledge of climate change.
In this case, I actually think the "conservative" solution is obvious: nuclear energy. If you do the math for real, measuring all the inputs and outputs, I hope you agree that corn ethanol is a huge mistake.
The beauty of nuclear energy, which we should hope will be much improved in the future (think cold fusion), is that it serves multiple purposes. Addressing climate change from our perspective of the present-day primitive level of understanding of our climate, is foolhardy. Efficiency and economic feasibility will lead us to the best solution.