Link: http://www.commondreams.org/headline/2012/01/29-2

It could be much more difficult than we thought to feed everyone in a warmer world.A study released Sunday afternoon finds that wheat crop yields could plunge due, in part, to climate change. Extreme temperatures are already cutting wheat yields in India (Narinder Nanu/AFP) The study, published in Nature Climate Change, researchers warn that current projections underestimate the extent to which hotter weather in the future will accelerate this process. Extreme heat causes wheat crops to age faster and reduce yields, the Stanford University-led study shows, underscoring the challenge of feeding a rapidly growing population as the world continues to warm.