> He is expecting, and preparing, for widespread riots by 2050. The riots will begin, he says, as they have throughout history, when we run out of food. Except

> He is expecting, and preparing, for widespread riots by 2050. The riots will begin, he says, as they have throughout history, when we run out of food. Except, we (the rich world) won't run out of food. About a third of the global maize (corn) crop is used for biofuels and a similarly large fraction of wheat and maize (edit: and soy) is used for animal feed. We may have to go light on meat consumption and ban biofuels (which would be no bad thing anyway). Places with ineffective government, dense populations, and water scarcity will likely suffer. Global warming is only one of a number of things we are doing to destroy the global harvest, though. Soil erosion and poisoning (salination and chemical poisoning), groundwater exhaustion, river diversion and damming, annihilation of supporting microbes and insects, ... take away climate change and the picture doesn't change much.