The 5,000 Kayapo Indians control a continuous block of the Amazonian forest that's about the size of the state of Ohio. Barbara Zimmerman, director of the Kayapo Project for Conservation International, tells the fascinating story of how the Kayapo tribe of Brazil has managed to protect the largest preserved area of rainforest in the world, including halting a major, World Bank-financed hydroelectric project and blocking a government plan to dump radioactive waste in the Amazon. "Enviro Close-Up" explores issues such as global warming, renewable energy, nuclear proliferation, & globalization.