A year without TP

This article (http://news.blogs.nytimes.com/2007/03/22/the-year-without-toilet-paper/) and some new friends, Zac and Sara, are making me wonder how much someone in Columbus can reduce their ecological footprint. Previously my thinking was more along the lines of "back to nature" and living off the land and off the grid was the only way to live completely sustainable. Can you have a zero ecological footprint while living in a city? I mean, of course you can limit your footprint, but is a "leave no trace" philosophy possible in a concrete jungle? Or will this lead to total upheaval of your life, and cause others to scorn such a lifestyle? This article also had some interesting links (noimpactman.com) (sfcompact.blogspot.com) (100milediet.org) (grist.org)