Zero and net-zero energy buildings are seen by their advocates as crucial to the effort to reduce greenhouse gas emissions and America’s reliance on carbon-based fuels. But how feasible is it to expect new buildings to reach zero or net-zero energy use? What are the technical, social, political, and economic advantages to reaching that goal? What can be done with the millions of existing buildings and homes? These are among the questions addressed in Zero and Net-Zero Energy Buildings + Homes, the eighth in a series of BD+C’s exclusive White Papers on the green building movement.