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| | Guardian Unlimited | Guardian Weekly |
 | | With about 840 million people in the world undernourished, and a further 2 billion expected to be born within 20 years, finding water to grow food will be one of the greatest challenges facing governments. |
 | | Research suggests that up to 24% more water will be needed to grow the world's food in 20 years, but many of the fastest-growing countries are unable to devote more water to agriculture without sacrificing ecosystems which may be important for providing water or fish. |
 | | The option of increased world trade in virtual water seems logical, the scientists say, but they recognise that it depends on countries having the money to import their food. |
| www.guardian.co.uk /guardianweekly/outlook/story/0,,1296051,00.html (710 words) |
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