School teachers, listen up! This is a call for help. You are one of the first lines of defense in the environmental movement. In a few short years, the upcoming generation will decide the fate of this planet. And when it comes to how to teach children science, math, and geography, you're the best at it. The interdisciplinary skills they learn today will be the planet-saving skills they enlist tomorrow. Now, we know that's a lot to bear on your shoulders, so we've put together a guide that will help you in the classroom--and outside it, too.