Agence France-Presse: A Swiss professor who developed a low-cost solar power cell using cheap materials such as dye squeezed from berries won a million-dollar technology prize in Finland on Wednesday. Michael Graetzel, 66, won the Millennium Technology award for process of “artificial photosynthesis” to capture the sun’s energy without need for an elaborate manufacturing process. The so-called “Graetzel’s cell” is made from a layer of titanium dioxide nanoparticles, covered with a molecular dye that …