PopSci senior editor Nicole Dyer and I, PopSci.com's editor, have undertaken a friendly competition to see who leads the greener lifestyle. Basically, she thinks shes more environmentally savvy than I am, and Im not tryin to hear that. I contend that I am the greener girl, although maybe Ive fallen off the wagon a bit lately. I do know a lot about how to reduce my impact on the Earth—I was an environmental educator after college, for chrissake. I worked on an organic farm. I interned at the USDA Sustainable Agriculture office. I read Silent Spring and that Rudolf Steiner book on biodynamics. But Nicole is right: I dont live 100 percent according to the green gospel these days.