Reuters: Britain aims to break a deadlock in U.N. climate talks when it hosts the world’s biggest emitters this weekend, as doubts grow that a summit in 50 days will agree a new pact. U.N. talks to widen the existing Kyoto Protocol still face wide open issues from funding and carbon emissions targets to legal basics such as how many new pacts countries must sign. “The deadline is concentrating minds,” said British Energy and Climate Change Secretary, Ed Miliband on Thursday, of the …