EARTH DAYS APRIL 22, 1970 TO APRIL 22, 2011

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EARTH DAYS AMERICAN EXPERIENCE’s Earth Days looks back to the dawn and development of the modern environmental movement through the extraordinary stories of the era’s pioneers — among them Former Secretary of the Interior Stewart Udall, biologist/Population Bomb author Paul Ehrlich, Whole Earth Catalog founder Stewart Brand, Apollo Nine astronaut Rusty Schweickart, and renewable energy pioneer Hunter Lovins.

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PBS NEWSHOUR CONVERSATION ON EARTH DAYS Where does the environmental movement find itself today, and where might it be heading? From PBS Newshour.