Solar Energy Farm Floats on Reservoir

Solar panel farms tie up large tracts of land. In small countries that can be a problem. French company Ciel et Terre has a solution: float solar arrays on reservoirs,…

Battery Yarn Could Knit Power Into Fabrics

The battery yarn is as flexible as any other woven material. best way to sell electric cars . Should automakers be boasting of their environmental credentials? Or should they talk…