The Economist magazine notes that rice yields are not improving very quickly and that the International Rice Research Institute says that it is the food commodity perhaps most vulnerable to climate change. It is also a major contributor to climate change due to its methane emissions and yet consumers will demand 30 percent more rice by 2050. First, it is difficult to say that climate change has slowed rice yields. Pakistan is the only major supplier with a drop in yield due to flooding last season. Rice varieties and cultivation are more tradition-bound, removing the potential for technological improvements.   India supplies over 40 percent of the world’s traded rice and its yield increases have been average a respectable 1...