When 28-year-old Sonelal Prasad left home on the morning of June 16 for his job at a construction site in Mumbai—the financial capital of India—he didn’t know he’d be digging his own grave. As he worked in the foundation pit of an upcoming high-rise, one of the many in the city, an intense downpour triggered a soil collapse, burying him alive beneath the rain-soaked earth.  Prasad’s death was the result of a dangerous convergence as densely-packed concrete cities expand and new ones mushroom