Guardian: A high-profile climate activist was arrested ahead of tomorrow’s major protests planned outside the Copenhagen climate summit, fuelling anxiety about how the Danish authorities are policing demonstrations. Tadzio Mueller, a spokesman for the umbrella group Climate Justice Action (CJA), was arrested today by plainclothes police as he left the Bella centre, where the official climate talks are taking place. The police are holding him at the Retorvej detention centre, and he will be …