This past week I spent Earth Day by participating at the AIA Westchester/Mid-Hudson Sustainable Design Symposium in Mt Kisco, New York. It was attended by nearly 100 Architects, some of those stopped by my booth. There were four seminars on: Solar Thermal Systems, IAQ and Challenges with Well Insulated Buildings, Water: Is the Northeast Runnind Out, MEP: Real Results in Energy Effecient Systems and a panel discussion on Different Green Building Rating Systems.