According to this article in the Guardian, Obama has no leeway, not a second to lose. The biggest clock of all, the climate, is ticking:

Barack Obama has only four years to save the world. That is the stark assessment of Nasa scientist and leading climate expert Jim Hansen who last week warned only urgent action by the new president could halt the devastating climate change that now threatens Earth. Crucially, that action will have to be taken within Obama’s first administration, he added.

I tell you, I would not want that man’s job. He has to bring so much together so fast and so well that there’s very, very little room for error. Two solid things–the economy and the ecology–have to be tackled brilliantly, right out of the gate. Two less tangible things–hope and transparency–have to be nurtured with care. If he pulls this off, if our elected official allow him to, if we keep our elected officials in line with emails, letters, and phone calls, then we all deserve the biggest party the world has ever seen.

So, go us!