The vibrant green and blue belie the shocking extent of pollution and encroachment afflicting the Karatoya. Once the lifeline of Bogura, this river now is a narrow canal, thanks to its constricted flow. The murky water that runs down the channel now is mostly sewage from municipality drains. The photo was taken recently near Bhatkandi bridge. Photo: Mostafa Shabuj

Ambulances, bikers and hawkers occupy a part of the road in front of National Institute of Traumatology and Orthopaedic Rehabilitation, popularly known as Pangu Hospital, obstructing traffic in Dhaka’s Sher-e-Bangla Nagar. The photo was taken yesterday. Photo: Prabir Das

A BITWA excavator extracting mud from the riverbed of the Turag near Dhaka’s Gabtoli to improve navigability and widen the channel. Cargo vessels carry the mud to different areas to fill up low-lying land. The photo was taken on Saturday. Photo: Rashed Shumon