Destroyed crops, riverbed cyclists and a ‘Rock of Starvation’: how drought has devastated the Danube

The Guardian travelled 100 miles along the EU’s longest river, where some residents are struggling to secure drinking waterFor centuries, the rock was seen as a warning. When it began to emerge from the Danube, beneath Gellért Hill in Budapest, it meant the river had fallen so low that floating mills could no longer operate, crops were probably failing, and hunger would almost certainly follow. That is why, in the Hungarian capital, where over time the boulder became little more than a...