New York Times: On the worst days, the toxic stench wafting through the Genda Government Primary School is almost suffocating. Teachers struggle to concentrate, as if they were choking on air. Students often become lightheaded and dizzy. A few boys fainted in late April. Another retched in class. The odor rises off the polluted canal behind the schoolhouse where nearby factories dump their wastewater. Most of the factories are garment operations, textile mills and dyeing plants in the supply chain that exports...