Marlene Rayner, former DuPont research scientist Sedona AZ (July 20, 2011)–Marlene Rayner, Sierra Club Sedona-Verde Valley Group chair and founding member of the Sierra Club National Zero Waste (ZW) Team in 2003 will be a participant in a series of Zero Waste and Sustainability conferences in San Diego, California beginning July 30 this year.  As a former DuPont research scientist for 20 years,...