sendler2112 wrote: It's going to take a mighty long extension cord on our electric tractors to start growing enough food for 11 Billion people in 70 years.
Really? Using the analogy of an extension cord? Come on now, battery powered tractors are not a long shot by any means, especially since they don't go far from home.
In any case, I do agree that the decline for fossil fuels will present a larger problem for food production than is realized. We'll have to stop growing corn for cows and ethanol, and instead grow vegetarian food for people. The reality is that all of the natural gas that's being flared in plenty of locations should be converted to ammonia and hoarded, because 10-20 years from now, when natural gas is a lot more expensive, people will be less inclined to be burning it in their homes, and the need for it to make fertilizer will be all the more dire.
The mechanization of farm production can easily be electrified, the hard part is going to be coming up with the necessary fertilizer at reasonable prices. I expect meat to be pretty expensive in 2040 unless we switch to soylent green. (Always an option!)