From Nobel Prize winner economist Paul Krugman:
... The prognosis for the planet has gotten much, much worse in just the last few years.
... In a rational world, then, the looming climate disaster would be our dominant political and policy concern. But it manifestly isn’t. Why not?
... Responding to climate change with the vigor that the threat deserves would not, contrary to legend, be devastating for the economy as a whole.
... Even as climate modelers have been reaching consensus on the view that the threat is worse than we realized, economic modelers have been reaching consensus on the view that the costs of emission control are lower than many feared.
... So the time for action is now. O.K., strictly speaking it’s long past. But better late than never.