An Australian farmer has launched a lawsuit against Bayer AG’s agricultural chemicals unit Monsanto after being diagnosed with cancer he says was caused by its weedkiller Roundup. New South Wales farmer Ross Wild was diagnosed with non-Hodgkin's lymphoma and cites his long-term exposure to Roundup’s active ingredient glyphosate as the cause. His lawsuit is the second such in Australia and the first from a farmer. Glyphosate is the world’s most widely used weedkiller. As of July 11, Bayer faced lawsuits from over 18,400 U.S. plaintiffs who say glyphosate caused cancer.