The pro-nuclear left grabs the bullhorn in this lively advocacy documentary, which argues that nuclear power is much less damaging to the environment than people think and, given the exponential rise in energy demand, the only credible alternative to fossil fuels. The five interviewees—among them Stewart Brand, editor of the Whole Earth Catalogue, and Richard Rhodes, author of The Making of the Atomic Bomb—recall their own anti-nuclear indoctrination during the postwar years and their gradual awakening to the folly of their ways. This anecdotal approach goes only so far, and the science on display (like sending journalist Mark Lynas to Chernobyl to record a low radiation reading) isn’t what you’d call rigorous. But writer-director Robert Stone (Oswald’s Ghost) does manage to shake up the debate, bursting the utopian bubble of wind and solar and noting that your little iPhone, when you figure in all the servers involved, uses as much electricity as a refrigerator.