Demonstration to urge politicians to act against climate change in France, as the COP24 is held in Poland [File:Jean-Paul Pelissier/Reuters]

United Nations negotiations aimed at preventing catastrophic climate change are set to wrap up in Poland on Friday after two weeks of heated disputes between rich and poor nations that saw countries most at risk plead for action.

Sources close to the COP24 talks told AFP news agency that delegates from nearly 200 nations

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