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Mar 16, 2007

Global warming reduces food crop yield

Global warming decreased the yield of wheat, maize and barley by around 40 million metric tons per year between 1981 and 2002 - an amount worth $5 bn per year at 2002 prices. So says the first study of the effects of existing climate change on global food production, conducted by researchers from Lawrence Livermore National Laboratory and the Carnegie Institution, US.

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