Editorial photo #13906720 Human Interest
15th Water Critical Mass In Krakow
A police boat sails down the Vistula River during the 15th Water Critical Mass in Krakow, Poland, on June 21, 2026. Water Critical Mass is a cyclical event where participants construct their own boats, rafts, and kayaks, navigating their colorful vessels down the Vistula River. (Photo by Klaudia Radecka/NurPhoto)