THE LONG READ: The environmental disaster in your wardrobe

Adam Matthews reports from "Knit City", the garment industry hub in India that generates billions in revenue but has also saturdated rivers with chemicals.

APPROACH the massive Orathupalayam Dam by road, and it quickly becomes clear that something has gone terribly wrong.

Within two miles of the dam, the lush rice paddies, coconut palms, and banana trees that have characterised this part of southern India suddenly give way to a parched, bright red landscape, dotted only with scrub forest.