David Johnston has been developing green building programs for the last 10 years. Named one of the top 50 remodelers in the country by Remodeling Magazine in 1990, he developed the first green remodeling program in the country in Boulder, Colorado, trains remodelers across the US, and is creating a national green certification program for the National Association of the Remodeling Industry. He is President of What’s Working and Lightworks Construction, Inc.. Kim Master is a Green Building Consultant and Senior Associate with What’s Working. She was previously Ecommerce/Project Manager with Care2.com, the largest environmental website for healthy living and a healthy planet. Both are from Boulder, Colorado.