I think the bigger risk will be associated with extreme weather, all over the globe, not just in the middle. We're already seeing that ramp up big time. I fea

I think the bigger risk will be associated with extreme weather, all over the globe, not just in the middle. We're already seeing that ramp up big time. I fear that long before the oceans rise substantively, crop killing heat, crop killing cold, crop killing floods, crop killing drought and crop killing storms will strike so widely, frequently and randomly that it will be difficult to reliably produce food anywhere. I haven't seen much science on this specific topic yet. I'm just intuitively extrapolating how quickly these food-destroying '500 year' storms are ramping up. We've had something like 6 '500 year' storms in the US so far in 2016.