Environmental News Network: There are a lot of contaminated sites in the US. Many are former landfills that are urban mounds of varying size, and they are often devoid of trees. This makes them good candidate sites for solar power or other forms of renewable energy. This is a win-win opportunity in many instances! The U.S. Environmental Protection Agency (EPA) recently updated its RE-Powering Mapping and Screening Tool, which will now provide preliminary screening results for renewable energy potential at 66,000, up from 24,000,...