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Solar cells provide homes with electricity for
fluorescent lighting in Cacimbas, Ceara, Brazil
Brazil is urging leaders at the World Summit on Sustainable Development to pledge to increase the amount of energy produced globally by clean, renewable sources (excluding biomass) from 2 per cent to 10 per cent by 2010.

The Brazilian scientist and Secretary of the Environment of Sao Paulo, José Goldemberg, yesterday (28 August) told delegates that providing 10 per cent of the world's energy needs using sources such as wind, wave and solar power would cut pollution as well as boosting local economies and providing employment.

But a number of developed countries, including the United States, Japan and Australia, are opposed to setting global targets, insisting that nations should be left to decide their own plans.

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