Earlier quoted context omitted.
No offense but I think you're missing the point. The author is not trying to paint an all-positive view of Global Warming he's trying to counter the arguments that claim it will be the end of the world. The problem with GW right now is it's a political football. The left wants to paint the right as irresponsible so they make catastrophic predictions. The right wants to paint the left as alarmist so they deny it outri…
Define "end of the world". The problem indeed is that we don't have computer models accurate enough to predict what will happen. A change of half a degree over the next hundred years isn't too worrying. But a change of 2.5 degrees shifts the wheat belt into Canada. The author is right on that it isn't the end of the world, per se, but he dodges the question of what small changes will do to our civilizations, by frami…
As somebody who has personally worked on wheat farms in Texas and in Alberta, (these two places, as you may know, have a wide temperature variation between them) I have to say the science behind this statement seems already empirically refuted.
I would submit to you that any extra wheat production you may see in the central US is due to topographical (it's flat), nutritional (good soil), and cultural (daddy was a wheat farmer) influences, more than any propensity of wheat for that exact temperature, as evidenced by the successful wheat farming americans and canadians from Texas to central Alberta)