As an organizer in the American Institute of Architects, Chris Stafford has long promoted sustainable design. As a natural builder, he worked with straw bale and clay in Greece and Saudi Arabia. For his Port Townsend home, he considered site, size, materials and energy. The 1500 sq. ft home uses mostly non-toxic materials (and fewer of them), foam insulation, metal roofing, solar hot water for space heating, photovoltaics for electricity, and an innovative rainwater collector for landscape irrigation. Episode 86.