The fascinating and turbulent history of the environmental movement is explored in this vivid documentary. With individual segments covering aspects of the cause from conservation to pollution, to the global pursuit of alternative sources of energy and climate change, this film celebrates the triumph of activists in the past and the challenges to be faced in the future. Narrated by Isabel Allende, Van Jones, Ashley Judd, Robert Redford, and Meryl Streep. 101 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital 5.1.