Climate experts and politicians from around the world are negotiating a new climate treaty in Copenhagen. Saving the planet is one of Marie Sophie Rohwäder’s top interests.The girl from Berlin joined 100 students from across Germany for a climate protection project. The aim is to make the climate a higher priority in school lesson plans. Protecting the planet begins right in front of Sophie's front door every day. She's even traveling with a small delegation to Copenhagen,to introduce her grassroots project.