A liability trial commenced this week in San Francisco against Monsanto for the alleged carcinogenic propensities of its popular herbicide RoundUp. The claim was brought on behalf of a school groundskeeper who is suffering from a terminal cancer. He alleged that his exposure to the glyphosate-based herbicide caused his disease. The case is one of 5,000 that are now being cued-up for trial.

The case mirrors the trajectory of asbestos exposure claims, the longest run tort in US history. The initial two liability cases, brought against the manufacturers, suppliers and distributors of asbestos fiber in the 1970’s, trigged a mass onslaught of workers’ compensation cases on a national basis.

Glyphosate, N-(phosphonomethyl) glycine, is one of the most widely used herbicides. It is the active ingredient in products such as Roundup, Rodeo Aquatic Herbicide, and Eraser. Glyphosate is a broad-spectrum herbicide that tis used on broadleaf weeds, grasses, and woody plants.

Occupational exposure cases usually turn on the opinions of medical experts and this case is no exception. Reuters reported, “ One of the experts is Beate Ritz, a public health professor at the University of California, Los Angeles who has criticized EPA studies of glysophates as flawed and concluded based on her review of available research that glyphosate-containing products "to a reasonable degree of scientific certainty" cause the lymphoma cancer….. The other is Alfred Neugut, a…