I've always kind of hated films about climate change.

I think people are losing that sense of security pretty fast, frankly.

I think that kind of urgency is what makes this stage of the climate movement really different from what it was even a few years ago when it was much more of the professionalized NGOs lobbying behind closed doors and maybe having a march now and then.

Film 'This Changes Everything' is not a sad story. It's not a slit-your-wrists climate film. It's a story about people who are making change happen.

We're dealing with a crisis of inequality, of joblessness, of underemployment.

Find an organization, shoot them an email, call them up, find them on Facebook and say "Hey, I want to volunteer." And that first step could lead to a whole life of engagement. It could be a pretty exciting ride.

The book and the film [This Changes Everything] fed into each other in ways that were compounding and very exciting. The pain was shared.