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      Climate change impacts on global food security.

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          Abstract

          Climate change could potentially interrupt progress toward a world without hunger. A robust and coherent global pattern is discernible of the impacts of climate change on crop productivity that could have consequences for food availability. The stability of whole food systems may be at risk under climate change because of short-term variability in supply. However, the potential impact is less clear at regional scales, but it is likely that climate variability and change will exacerbate food insecurity in areas currently vulnerable to hunger and undernutrition. Likewise, it can be anticipated that food access and utilization will be affected indirectly via collateral effects on household and individual incomes, and food utilization could be impaired by loss of access to drinking water and damage to health. The evidence supports the need for considerable investment in adaptation and mitigation actions toward a "climate-smart food system" that is more resilient to climate change influences on food security.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Aug 02 2013
          : 341
          : 6145
          Affiliations
          [1 ] Walker Institute for Climate System Research, Department of Agriculture, University of Reading, Reading, UK. t.r.wheeler@reading.ac.uk
          Article
          341/6145/508
          10.1126/science.1239402
          23908229
          33fcfe8f-c679-4aa3-b9b9-97f0820fecfa
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