I heard about this about a month ago and thought, no thanks, I'm doing my bit with CDing my youngest two. I told DH about it and he had his standard "you're turning into a hippy" response. Now that I think about it more, I'm totally going to try it! I'm an "accidental environmentalist" as I started doing all sorts of new things to save $, but now I'm actually concerned about my carbon footprint. I haven't told DH yet, but I know he'll come around. He used to say he would never co-sleep and now that we have three kids (DD and DS share a bed) he says, "can we bring Isaac and Eva into bed tonight? I miss them." My evil plan is working.... LOL! Can't wait to until he starts telling his coworkers at the fire dept about this...