UN Secretary General warns world has almost reached a point of no return

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As delegates from nearly two hundred countries begin climate talks in Madrid, the UN Secretary General has called for much greater ambition to prevent catastrophic temperature rises; the British prime minister, Boris Johnson, has told the BBC that 74 people jailed for terror offences and released early will have their licence conditions reviewed; and the Maltese Prime Minister Joseph Muscat has announced on national TV that he will step down in the new year, amid a crisis over a murdered journalist.