Water security and climate change: how science can help

SciDev.Net: Policymakers need better information about the regional impact of climate change on water supplies, and on ways of adapting to it. For centuries, food production -- and thus social development -- has depended heavily on access to the water needed to grow crops or rear livestock. Having enough water is only part of the issue, however: it must also be available when and where it is most needed. In the past few decades, the balance between water supplies and human need has come ......

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