In SCRAP HOUSE, viewers go on a wild ride with a team of architects, construction managers, and builders who are attempting to build a house in 30 days using entirely found/recycled materials. The team of San Francisco-based building experts accepted National Geographic's challenge to take green building to the next level in honor of 2005's World Environment Day. The group includes Laurence Kornfield, chief building inspector for the city and county of San Francisco; general contractor John Pollard; and architect John Peterson. Together they design a 1,000-square-foot house with 21-foot ceilings and set out to build it in four weeks using only materials found in local scrap yards. Along the way, the team runs into problems that they have to solve creatively and ecologically: How can they insulate the structure? (With telephone books.) How should they cover the walls of a room? (With discarded fire hoses.) Where can they find a chandelier? (Make one out of traffic lights.)