We conservatively used the distance of 2000 feet to calculate potentially harmful proximities of croplands to Iowa public school buildings…89.6 percent of Iowa PK-12 public school buildings (1183 of 1321) are within 2000 feet of cropland. This means 444,559 students and teachers in…

Glyphosate Glyphosate was discovered by a Swiss pharmaceutical chemist in 1950. Monsanto researchers later determined that glyphosate had herbicidal effects, and it was patented under the commercial name Roundup. It was first approved in the U.S. in 1974. Monsanto’s patent…