France, Solar cells, Energy
Power of the Sun. Dirt cheap In the late 1980s, the German-born chemist Michael Grätzel literally tied his name to an invention that is hailed as a revolution in renewable energy .
Harnessing Solar Energy One good way of helping the environment is to put what we call ‘solar panels’ onto the roofs of buildings. When the sun is shining these panels trap the rays and turn it into electricity and heat.