Carbon Positive: In just two months from now, Copenhagen will be over. The long awaited conference that was to be the climax of international efforts to thrash out a new global climate agreement to replace or extend the Kyoto Protocol. But latest talks in the lead up to that event make it clear that last days of 2009 won’t produce the final outcome that many have been hoping for over the past two years since the Bali roadmap was laid down. The second-last negotiating session before Copenhagen, in …