Lingering long after the bombs stopped falling in Vietnam, the effects of Agent Orange continue to haunt Vietnamese people and American veterans of the war. Generations later, cancers, birth defects, deformities, and organ failure have all been attributed to exposure to the chemicals produced by Monsanto and Dow Chemical to defoliate Vietnamese jungles. Now Dow Chemical wants to increase the use of 2,4-D, a major component of Agent Orange, on American farmlands. Dow Chemical

Although there is much promising research, there is no known cure for Parkinson's disease. Also, relatively little is known about how Parkinson's disease develops. Research suggests that the cause of Parkinson's disease is a mix of heredity and environmental factors. Pesticides in particular have been repeatedly linked to Parkinson's disease. According to the Parkinson's Disease Foundation, one major environmental factor is pesticide exposure. A meta-analysis in 2012 found th