Wonderful picture, this: grandma's cooking emerging from sustainable technology. This sort of transformation is most needed outside the US cultural frame, though. TreeHugger covered the designs of several great looking solar cookers in an earliler post. Ms. Kerr (shown on left side of photo) is with the Kerr-Cole Sustainable Living Center, and collaborates with others to transfer solar cooking technology and energy efficient cooking tools in general to developing nations. All it takes to realize how important more efficient cooking can be is to travel to a developing country where women and children spend the better part of their day gathering fire wood and lugging it home, then fill their homes with smoke while they cook, and, in doing so, consume local forests. The health toll from breathing wood and coal fumes alone is serious enough to warrant getting this technology out.