ABSTRACT
Climate change is bad news. Humankind has exceeded the Earth’s carrying capacity, and resources of all kinds are becoming scarce. Agricultural yields have more or less kept pace with the growth of human demands, and famines are better managed today than in the past. Yet it is hard to imagine how a more energetic environment, with greater seasonal swings, and worse weather extremes, could possibly help global food production. A few nations, such as Canada, Russia, or New Zealand, might profit from a warmer world. Their farm-and ranch productivity could increase. But most nations, in all likelihood, will experience climate change as hardship.
