Super-Efficient Solar Cell 'Evolved' in a Lab

Super-Efficient Solar Cell 'Evolved' in a Lab : Discovery News: "Scientists are using principles of natural selection to evolve a more efficient solar cell. Engineers at Northwestern University wrote a computer program that "mates" design elements and assesses the fitness of their "offspring" to come up with the most efficient possible organic solar cell. Organic solar cells are made with the so-called organic elements — carbon, oxygen and nitrogen -- and are cheaper to make, lighter and more flexible than the traditional silicon cells available in solar panels today."