Saturday, April 24, 2010 9pmProducer: Spectrum RadioListen AgainThe Energy Revolution explores discoveries and innovations in renewable energy. We'll meet a wind power expert from Brussels, and visit the world's largest solar tower in Seville and hear reports on a wide range of green technologies being developed around the US: turning cooking : turning cooking oil into fuel for cars in Massachusetts; from Michigan, making fuel from algae; and from Virginia, pumping water for energy storage... among other stories.