Monsanto's herbicide Roundup, with glyphosate as the primary ingredient, has recently been linked to a fatal kidney disease epidemic ravaging parts of Central America, India and Sri Lanka. A leading theory hypothesizes that complexes of glyphosate and heavy metals poison the kidney tubules.
El Salvador and Sri Lanka have adopted the precautionary principle and taken action to ban the herbicide. In the United States, glyphosate is coming up for review by the Environmental Protection Agency (EPA) in late 2014. Monsanto claims a low risk to human health, but the research is showing something very different. Will these health concerns be enough for the EPA to put restrictions on the herbicide - or to ban it altogether?