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A Caltech researcher thinks arrays of tiny wind turbines could produce cheaper power than big ones.
Tesla’s innovations in batteries give it an edge that Fisker, focused on design, lacks.
Energ2’s nanostructured carbon anodes can boost lithium-ion battery capacity by 30 percent.
With no one buying new equipment, solar companies are looking to make the best of existing technology.
Underground rocks that react with carbon dioxide to form minerals could offer a safe way to keep the greenhouse gas from reaching the atmosphere.