Overview: An exploration of the environmental movement from the 1960s through 2009. Included: the battle in the 1960s to block dams from the Grand Canyon; the Love Canal scandal of the 1970s; Greenpeace's efforts to save whales and baby harp seals; the global resource crises of the 1980s; and the 25-year effort to address climate change. Narrators include Robert Redford, Meryl Streep, Ashley Judd, Van Jones and Isabel Allende.