For years, opponents of glyphosate have argued the active ingredient in the herbicide Roundup is harmful for your health. These messages, along with a 2015 decision by the International Agency of Research into Cancer (IARC) to classify the chemical as a probable carcinogen, have spurred a group of plaintiffs to
file a lawsuit against Roundup's manufacturer, Monsanto, alleging the herbicide caused their cancer. At the same time, the State of California has survived a
legal challenge from Monsanto, winning the right to require a warning label about glyphosate's health risks.