Elie
Created page with "If walkability is achieved by building brand-new neighborhoods, how long would it take to "break even" considering the carbon emissions of the construction & materials? ==Answers== {{answer|~~~~| Simplified model: * Consider the carbon footprint of making a new building, per person living there. * Assume a full extreme lifestyle change: people go from "USA average" amount of driving, to zero driving. In such a case, it would take about '''7 to 8 years''' to pay itse..."