Mongabay: The breakthrough scientists have been waiting for to make solar power cheaper, more efficient–and therefore a more effective replacement for traditional energy sources–has been made by a group of MIT researchers. The researchers have updated a relic power source developed in the 1970s called luminescent solar concentrator or LSC. An LSC collects light through dyes painted on a transparent surface; the light is then transported across the surface to solar cells at the edge. In the …