The lesson of COP21 is that we can't wait for COP22 to solve the climate crisis.
People are divided on what to make of the rest of the dense, 31-page document.
If the precise mechanisms for curtailing carbon emissions—and holding countries accountable—aren't hashed out in the conference's final hours, the goal of limiting warming to 1.5 or even 2 degrees is worthless.
Negotiators just took a big step forward in the fight against global warming.
We've been waiting years for this moment, says Ken Berlin, president of Al Gore's Climate Reality Project. Let's make it count.