As climate risks grow, India's Bengaluru is trying to save its vanishing lakes

Sunil Kumar rowed his small boat, moving a few feet at a time, while he spread a fishing net across the weeds floating like a green carpet on Doddajala Lake. Kumar, a fisherman who grew up nearby, and the others have been working 10 hours a day for two weeks to clean this water as part of a wider effort to restore polluted lakes that are in danger of disappearing around Bengaluru, India's fast-growing tech hub. Bengaluru had more than 250 lakes in the 1970s.