As Copenhagen nears, we'll be hearing regularly from the spokespeople for the big green groups. But if you want to know who's really powering the climate change movement right now, you need to look at young people. As I travel the globe organizing the giant day of action for 350.org, it's people between the ages of 15 to 25 who are carrying the load in country after country. This movement began in the states with Billy Parish, Jessy Tolkan, and EnergyAction, which drew 12,000 college kids to the Powershift gathering in D.C. in March. Now there are Powershift gatherings planned in Australia, in the UK, and lots of other places. The India Youth Climate Network is turning the subcontinent green. The same in Africa, the Caribbean, South America, the Mideast, even China where kids are currently crisscrossing the country on the Green Long March. And best of all, they're refusing to settle for the "politically realistic." They're actually asking our leaders to produce what science demands. It's good fun to work alongside them.

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