In the face of steeply rising oil prices and political turmoil in the Middle East, there is new urgency in finding a solution to our uncertain energy future. Breakthroughs in new materials and ingenious designs for solar collectors are transforming the technology into a vastly cheaper, more efficient alternative.  NOVA presents the latest thinking from solar enthusiasts and skeptics as it investigates cutting-edge research developments. The film introduces viewers to the scientists and businesspeople who are racing to make solar power practical—for lighting, heating, and running power plants.