Oil states try to turn sunlight into freshwater [News]

It seems like a natural fit for desert dwellers: Use the sun to scrub salt from groundwater or seawater and make it suitable to drink. Armed with oil money, the Saudi government's Saline Water Conversion Corp. (SWCC) has already built the world's most extensive network of desalination plants. However, like many facilities in Saudi Arabia, those plants are powered mostly by fossil fuels.