Digging deep into the history of phosphate mining, this article engages contemporary debates about the environmental sustainability of using Roundup to produce our food by focusing on the front end rather than the back end of the product's life cycle. Though many people may not know it, the critical raw material Monsanto uses to make Roundup an effective herbicide is elemental phosphorus, which comes from a processing plant in southeast Idaho that remains an operating Superfund site to this day.
