Advanced Sustainable Design Certificate Course led by Larry Santoyo, Director EarthFlow Design Works & the Center of Natural Design. With Toby Hemenway, Author Gaia's Garden: a Guide to Home-Scale Permaculture. Along with other industry experts presenting sustainable building materials and techniques, and other sustainable systems in theory and practice. Course will take place two weekends each month and will commence in March 2005. email david@greeningplanet.com to register or for more information.