This Is Cool Dept: A bunch of kids in California, arguing "we will inherit this world," have organized a Kids Vs. Global Warming campaign that began with a 13-year-old's video explaining climate change "in like a minute." iMatter, a non-profit project of Earth Island Institute, is holding a series of marches starting on Mother's Day. Partnering with "a coalition of awesome attorneys," it is also taking governments to court, based on the public trust doctrine that common resources like air and water are held in trust for the people. Kids these days: What will they do next?