Phasing out these hand-outs would reduce CO2 emissions significantly and enable renewables to compete on a level playing field, while the money saved could be used to subsidise the transition to clean energy or help the world deal with a warmer planet. Currently, the richest countries are spending six times more on supporting fossil fuels than on helping poorer nations adapt to climate change, according to a London think-tank, the Overseas Development Institute (ODI).

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