Mealey's (January 12, 2022, 1:29 PM EST) -- PASADENA, Calif. — In lengthy arguments before a panel of the Ninth Circuit U.S. Court of Appeals on Jan. 10, attorneys for environmental groups, the U.S. Environmental Protection Agency and Monsanto Co. engaged in a protracted debate as the judges pressed for an understanding of the EPA’s interim review decision on glyphosate, the active ingredient in the herbicide Roundup, which held that while there were no human health risks from exposure, there is a “potential ecological risk” to mammals and birds....