Bengaluru — Waiting under the scorching sun for a tanker truck to deliver water to his home, Chandra Shekhar reminisced about how his southern Indian city once brimmed with pristine lakes and lush gardens.

“They are all gone now. They have been consumed by buildings and more buildings,” said the retired engineer, who has seen the IT hub of Bengaluru — often dubbed India’s Silicon Valley — transform since he was a boy. “Bangalore [another name for Bengaluru] has gone from being the city of lakes to the city of concrete. Because of this, all the water has disappeared.”

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