The Danube Falls to Record Lows, Exposing Nazi Warships and Mammoth Bones

Europe's second-longest river has dropped to record-low levels, and residents and researchers are finding historic and prehistoric relics surfacing in its channel: scuttled Nazi warships, unexploded bombs and woolly mammoth bones. The exposed wrecks are one visible marker of a heat wave that is also fueling drought, deadly wildfires in Greece and cooling problems at nuclear reactors, while Italy urges visitors to reorganize their days around the worst of the afternoon heat.