William Powers has worked for over a decade in development aid in Latin America, Africa, Washington, D.C., and Native North America. His project in the Bolivian Amazon won the 2003 Harvard University JFK School prize for innovation. He is author of the Liberia memoir "Blue Clay People," and contributor to two recent books on tropical biodiversity. His essays have appeared in the "New York Times "and "International Herald Tribune," and he provides commentary for World Vision Radio and NPR. Powers, who is still based in Bolivia, is 2004-2005 recipient of the Open Door Foundation fellowship for n...