TOPSHOT - This aerial photograph shows excavators digging sand from the bottom of a dried-up branch of the Danube River near the city of Ruse, on August 21, 2026. The Danube -- which runs from the Black Forest mountains of western Germany through 10 countries to the Black Sea -- has dropped to record low levels in parts due to prolonged rain shortages and successive heatwaves since May 2026. (Photo by Nikolay DOYCHINOV / AFP via Getty Images)