1) Steve Westcott talks with Chris Yoder, Manager of the Ecological Assessment Unit for the Environmental Protection Agency in Ohio, and John Hull, President of Hull & Associates, about their plan to use experimental pellets called Aqua Block to cover sediment at the bottom of the Ottawa River in order to prevent additional PCB?s from entering the water. 2) Peter Berle talks with Gary Matlock, Director of the Office of Sustainable Fisheries, Kim Davis, Regional Fisheries Project Manager for the Center of Marine Conservation, and Patricia Fiorelli, Public Affairs Officer for the New England Fishery Management Council, about overfishing and revisions to the Magnuson-Stevens Fishery Conservation and Management Act. 3) Rachael Phillips plays listeners? comments about automobile emissions. 4) Peter Berle talks with Barbara Pyle, environmental journalist and CNN?s environmental editor about receiving the United Nations Environment Programme Sasakawa Environment Prize. 5) In The Earth Calendar segment, Peter Berle talks with Mark Hostetler, ecology professor at the University of Florida, about insect hibernation. 6) Steve Westcott talks with scientists from the Surface Heat Budget of the Arctic Ocean Project, which is supported by the National Science Foundation and Office of Naval Research, about ice pack studies in the Arctic Ocean. 7) Peter Berle talks with Michael Webber, Special Assistant to the Director of the National Marine Fishery Service, and Joe McGonigle, Executive Director of the Maine Aquiculture Association, about the environmental impact of salmon farming. 8) Janet Anderson, correspondent for Radio Netherlands, reports on how the International Service for National Agricultural Research is using the Internet to disperse information to scientists in developing countries. 9) Peter Berle talks with musician Paul Winter, and plays tracks from his CD, ?Canyon Lullaby.?