Mealey's (February 10, 2023, 11:30 AM EST) -- PHILADELPHIA — Monsanto Co. filed a brief in the Third Circuit U.S. Court of Appeals contending that in light of the U.S. Environmental Protection Agency’s determinations, there is no requirement under federal law to warn that glyphosate, the active ingredient in the herbicide Roundup, causes cancer and that any state law requirement to do so would constitute a false warning that would result in a violation of the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA)....