A group of boys play in the Buriganga river, diving from a pipe on Friday, May 13, 2022 as rains start turning the dark water of the heavily polluted river in Dhaka into its clear self. Photo: Mahmud Zaman Ovi

A group of boys play in the Buriganga river, diving from a pipe on Friday, May 13, 2022 as rains start turning the dark water of the heavily polluted river in Dhaka into its clear self. Photo: Mahmud Zaman Ovi

A group of boys play in the Buriganga river, diving from a pipe on Friday, May 13, 2022 as rains start turning the dark water of the heavily polluted river in Dhaka into its clear self. Photo: Mahmud Zaman Ovi