Guardian: Rich countries today piled pressure on Africa not to derail climate talks after the poorest countries in the world shocked the UN by walking out of the official negotiations, demanding that their concerns be met. The chair of the Africa group of nations, Kamel Djemouai, was recalled from Barcelona by the Algerian government and other African delegations reportedly received “strong” phone calls from their capitals urging them not to imperil the last negotiations before Copenhagen. …