A Bangladeshi man checks the movement of industrial effluents flowing into the River Shitalakhya on the eve of World Water Day in Kachpur, near Dhaka, Bangladesh, Saturday, March 21, 2015. The U.N. warns that the world could suffer a 40 percent shortfall in water by 2030 unless countries dramatically change their use of the resource. (Photo by A. M. Ahad/AP Photo)
