Research shows climate change may shrink wheat crops

Australian Broadcasting Corporation: MARK COLVIN: New research predicts that climate change will have a far greater impact on wheat crops than expected. Scientists from Stanford University found that a two degree increase in temperatures would reduce the growing season by nine days, yielding 20 per cent less wheat. This could have a dire effect on global food security. Meredith Griffiths reports. MEREDITH GRIFFITHS: Wheat is the world's second biggest crop and provides a fifth of the world's protein. But it doesn't grow......

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