ALL I EVER wanted to see was a movement of people to stop climate change, and now I've seen it. And it looks so beautiful. It's hometown heroes like our friends in D.C. who've been fighting coal plants, and far-flung heroes like those who've been bravely blocking the Keystone XL pipeline with their bodies in Texas. It's people who understand that the fight against fracking and coal ports and taking the tops off mountains is ultimately the fight for a living planet; it's people who have lived through Sandy and survived the drought, some of whom I got to go to jail with recently.
It's the students at 252 colleges who are now fighting the fossil fuel industry head on to force divestment of their school's stock—the biggest student movement in decades. It's all of you—you are the antibodies kicking in, as the planet tries to fight its fever.
We've waited a very long time to get started, I fear. We've already watched the Arctic melt; our colleagues in 191 countries tell us daily of some new drought or flood.
Because we've waited this long, the easiest answers are no longer enough; we're going to have to make tough decisions. Our theme has to be: When you're in a hole, stop digging. Above all stop the Keystone XL pipeline. The president can do it with a single stroke of his pen, and if he does he will become the first world leader to veto a big project because it's bad for the climate. That would be a legacy—and a signal to the rest of the world that we're serious about this fight. It's his test.