Brisbane Times: Opposition Leader Malcolm Turnbull says there is little hope of world leaders agreeing on critical climate change limits in Copenhagen. “The fact is the treaty won’t be signed in Copenhagen,” Mr Turnbull told Macquarie Radio on Monday. However, he did say he believed climate change was a serious threat. “I believe the world should take effective global action. “I believe Australia should be part of it and we have to do so in an effective and economically …