A research team led by Liverpool John Moores University scientists has discovered what could be the world’s very first polluted river, contaminated 7,000 years ago. In a now-dry riverbed in the Faynan Orefield of southern Jordan, the team found evidence of anthropogenic copper pollution. Wadi Faynan, where J.P. Grattan et al found evidence of ancient pollution caused by bead making and/or repeated combustion of copper ores in hot fires. Image credit:...