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By Nina Chestney LONDON (Reuters) - Dwindling supplies of metals, water and biomass could slow the deployment of clean energy technologies by 2035, a study by research organization the Stockholm Environment Institute and by business initiative 3C showed on Tuesday. Governments and companies are increasingly developing low-carbon technologies to reduce their dependency on fossil fuel-based energy sources and to cut greenhouse gas emissions.

By Stanley Carvalho ABU DHABI (Reuters) - Renewable sources such as solar, wind and hydropower could fulfill almost 80 percent of the world's energy demand by 2050 with the right policies, according to a U.N. report which won backing from governments on Monday.