Evaporation ponds can occupy a large footprint and pose risks to wildlife, yet are an economical way to deal with contaminated water. Berkeley Lab researchers have demonstrated a way to use solar energy and water’s inherent properties to potentially reduce the environmental impact of these ponds. https://newscenter.lbl.gov/2020/01/06/polluted-wastewater-in-the-forecast-try-a-solar-umbrella/