"In a revolutionary leap that could transform solar power from a marginal, boutique alternative into a mainstream energy source, MIT researchers have overcome a major barrier to large-scale solar power: storing energy for use when the sun doesn't shine."
Read the full story by Anne Trafton from MIT and watch Dan Nocera's video description:
http://tinyurl.com/5uu53h (Composed on BlackBerry; UPDATED with embedded video content.)