( June 28, 2023, 1:57 PM EDT) -- SAN FRANCISCO — Monsanto Co. on June 27 filed an answer in California federal court denying all allegations that glyphosate, the active ingredient in the herbicide Roundup, causes cancer and arguing that any alleged negligent or culpable conduct of the company, which it does not admit, “was so insubstantial as to be insufficient to be a proximate or substantial contributing cause of plaintiff’s alleged injuries.”...