Montana and Wyoming have taken their transboundary water dispute to the Supreme Court. Wyoming won the first round. But others await in a case that will help decide how much water is really available to generate energy and to produce food in one of the nation’s driest regions, as well as who has access to that water.

The sewer district joins more than 40 American municipalities…

The energy target will be the highlight of a document to come later this year, as well as a cornerstone of China's efforts to curb soaring greenhouse gas emissions, which currently stand at a quarter of the global total. Cutting coal consumption will inevitably also cut water use, as coal is China's largest industrial user of water.