A washerman washes clothes on the banks of the river Brahmaputra on World Water Day in Guwahati, India, Wednesday, March 22, 2023. From droughts stifling once-reliant sources to destructive downpours and floods, what the world does about its water woes is the central question at the U.N.'s three-day water conference that begins Wednesday. (AP Photo/Anupam Nath)