Can you tell us something about that? How can people get involved?

The Global Work Party will be great. People in thousands of places planting community gardens, building bikepaths, etc. Not because we think we can solve climate change one bike path at a time (though every bit helps). But becuase we want to send a pointed political message to our leaders: We’re getting to work — what about you? If I can climb up on the roof of my school and hammer in a solar panel, maybe you can climb up on the floor of the Senate and hammer out some legislation? Time to shame folks a little.

What are a few things each of us can do every day (or every week) to help get to the 350 ppm goal?

Organize. Make sure there’s something great happening in 10/10/10 in your community. Change your lightbulb, but don’t fool yourself into thinking it matters all that much. What matters is building a movement large enough to get largescale change. That’s what the brutal physics and chemistry of climate change demand.

As someone who spends a lot of time sifting through thousands of incredibly depressing statistics and stories about climate change, is it hard to retain a sense of hope? Deep down, do you believe humans will rise to the occasion and save the planet?

I’ve given up trying to figure out if I’m optimistic or pessimistic. I just get up in the morning and go to work. The fact that I go to work alongside millions of other 350 activists in virtually every country on Earth — that makes me willing to keep fighting hard.