When you're thinking about climate change, it's easy to get demoralized. Happens to everyone. But for the organizers of 350.org, even the darkest moment in recent climate-movement history—the aftermath of the global Copenhagen climate summit in 2009, when world leaders tried and failed to create a global treaty—couldn't keep them down. Hear how 350 went from that moment ("Take a nap, and get back to work") to devising a whole new strategy of civil disobedience (see: Keystone XL) and corporate campaigning (gofossilfree.org), and breathed new life into the global climate movement. Plus, the origin of the word "crisitunity!"