Taking part in an Earth Day panel at Georgia Southern University, U.S. Rep. John Barrow voiced support for federal funding and coordination of research and development for new energy sources, but opposition to policies that make “dirty energy” more expensive.Barrow, D-Ga., was one of five speakers Monday evening for the Earth Day Energy Panel. Other panelists represented the Clean Air Campaign and segments of the energy industry, including electricity, natural gas and biomass. About 50 people attended the program hosted by the GSU Center for Sustainability.Center director Lissa Leege, as moderator, asked Barrow to outline his position on current and potential energy production in the Southeast.