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Climate risks to global agriculture are underestimated

Source:  Copyright 2007, Mongabay.com
Date:  December 3, 2007
Original URL: Status ONLINE


Vulnerability of global agricultural to climate change may be underestimated by experts, warns a trio of papers published in week’s issue of the Proceedings of the National Academy of Sciences (PNAS). The research says that "progressive changes predicted to stem from 1- to 5-degree C temperature rises in coming decades fail to account for seasonal extremes of heat, drought or rain, multiplier effects of spreading diseases or weeds, and other ecological upsets," according to a statement from Columbia University's Earth Institute.

"Many people assume that we will never have a problem with food production on a global scale. But there is a strong potential for negative surprises," said Francesco Tubiello, a physicist and agricultural expert at the NASA/Goddard Institute of Space Studies who coauthored all three papers.

The researchers say that current grain production—from which humans derive two-thirds of their ...

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