It's a truism: going green sometimes means reusing everything you already have. When it comes to home remodeling, the best approach is often to take the existing house footprint and make it as beautiful and energy efficient as possible. Old House Web is a fantastic resource for helping homeowners celebrate their old building stock and make the most with what they've already got. Check out their Green Guide for key resources and advice before you begin your next project, and watch this video on how an old house got some new energy-efficient life. Very inspiring.