By Paul Tuthill
http://stream.publicbroadcasting.net/production/mp3/wamc/local-wamc-930272.mp3
Springfield, MA – Employment in the clean energy sector in Massachusetts has grown, even through the recession, according to an industry group. But, an expert says the future of clean energy is clouded by the absence of a federal energy policy....WAMC's Pioneer Valley Bureau Chief Paul Tuthill reports....