I can't figure out if I deeply respect a New York family that is committed to living a "No Impact" lifestyle for a year -- or if I think they're nuts.Either way, they are in the midst of a mind-blowing experiment that involves leaving no impact -- zero, zilch, nada -- on the planet.Among other things, this means no toilet paper -- zero, zilch, nada -- for a year. An article in the New York Times chronicles their brave new life -- and it is fascinating. Or, as the article puts it: Welcome to Walden Pond, Fifth Avenue style. And turns out that everything is a challenge to anyone who's trying not to leave behind a carbon footprint in the big city. Here are some of the ways they're accomplishing this daunting task: They'll only eat only organic [0] foods grown within 250 miles of New York City. (They've modeled their plan after the couple who's trying the 100 Mile Diet in Vancouver.)They won't buy anything that isn't locally-grown food. They aren't producing any trash.They aren't using any paper.They won't take any carbon-fuel based transportation. (They're getting very skilled at using razor-style scooters.)Ultimately, their experiences this year will be turned into a book and movie. Meanwhile, for anyone who is as fascinated by their experience, they're keeping a blog, No Impact Man, so that the rest of us can track their day-to-day trials, tribulations, and triumphs. I can't even remotely imagine going these extremes. But I'm thrilled that these folks are willing to venture this far into living a no impact lifestyle -- and show us how it's done. We all know that it ain't easy being green -- but when people are willing to try this hard, it's downright inspiring. Photo credit: The New York Times