The news are all over the media and there is no need to go into much detail. Suffice to say that, in spite of the big expectations, the world leaders were unable to reach any significant commitment in order to reduce the CO2 emmissions. Furthermore, instead of fighting for an agreement together, the discussions were split, and at some point USA imposed its weight to press China in order to get a truly minimum commitment. Obama failed to behave as a leader moving truly forward. And without nothing important to offer to the public opinion, with plenty of leaders leaving the meeting before the end, and in a situation of "save yourself if you can", the outcome is truly disappointing.
But beyond the lack of agreements, maybe the worse outcome of Copenhagen is the disbanding of a common effort, and the clear evidence that UNO has no capability whatsoever to enforce a concerted action from nations. The role of UNO has been losing importance during many decades, and this might be the final symptom of something which is hardly a secret anymore: there is a clear need to implement a new organization, involving all the nations in the world, were issues which affect all humans, of the current and future generations, can be discussed and real solutions be undertaken.
Until that happens -if that happens anytime, that is-, the world is closing a chapter full of expectations, but with no results at all. And we keep on acting as if life on Earth was for granted, no matter what we do.