1.) Host Bruce Robertson talks with Dr. David Suzuki about his new book "Wisdom of the Elders", which parallels indigenous peoples' wisdom to modern science. 2.) Scott Schlagel talks with Donald Stedman, professor at the University of Denver, about his new sensor that tests the emission rates of cars. 3.) Robertson talks with Lester Brown, of the World Watch Institute, about his new book "Vital Signs", and about the good and bad news in current environmental trends.