| http://www.w3.org/ns/prov#value | - ollege London, said ???we live in a world of crises in water, food, energy and civil strife, all of which seem to be getting worse???.With one in six of the world???s population currently going hungry ??? and food prices not only going up but fluctuating wildly ??? he said food production had to be increased by 60???100% by 2050.???There are a number of challenges to this,??? he added. ???Populati
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