After a year in which it nearly lost its compass, the campaign against climate change heads into 2009 needing top-level political commitment, creative thinking and a deep well of money.And make new decisions.
Next year holds a big dream: by its end, the world will have forged a treaty in Copenhagen to shrink global warming from mankind-threatening juggernaut to manageable problem.
And boy do they seem optimistic:
British economist Nicholas Stern, author of the 2006 Stern Review on the costs of climate change, said 2009 demanded boldness.
The world had the chance to make a historic shift, he argued in Poznan.
"We can actually lay the foundations over the next two years for the low-carbon growth which will be the sustaining growth of the future," Stern said.
But, he added: "I don't take any of this for granted. The human race has an incredibly well developed capacity to screw up, and we may miss this chance."