Over the past few years, people who live along Alaska’s Railbelt have begun to worry about the lifespan of the system that delivers energy to their homes and businesses. A brighter future could be on the way through steps the legislature and the administration are taking to find alternatives. Their work is centering on new sources - and on delivery of natural gas. But another, renewable, energy project is in the works - geothermal.Dave Donaldson, APRN - JuneauDownload Audio (MP3)