James Garvey wonders if we've missed our chance to stop global warming:
There is now at least the possibility that it is now too late to do the right thing — it might already be too late for the LCDs and small island states, who are calling for an immediate deal and even tougher targets. As the space on the graph between us and 2030 compresses, and the lines we have to contemplate riding out become steeper and steeper and therefore further and further from the realm of the physically possible, the possibility that it’s too late is genuinely before us. Facts here intrude on morality, and sometimes the possibility of doing the right or just or equitable thing can slip beyond our grasp if we let it.
Which Obama and the Democrats did.