This episode includes a great history or overview of environmental politics, and a really stirring call from George Woodwell that scientists have an obligation today to be obnoxious (since simply setting forth the facts isn't being heard) to protect all people, b/c "the cost of failures...are going to be civilization itself."
The interview with Dianne Dumanoski about the "near miss" of the ozone layer hole clearly articulates the belief that the Earth was so robust there was nothing we could do harm it, which is what it used to be easy to think, even though it is demonstrably not true.