A Study Is Retracted, Renewing Concerns About the Weedkiller Roundup NYT Par :Hiroko Tabuchi 2 janvier 2026 à 21:25 Problems with a 25-year-old landmark paper on the safety of Roundup’s active ingredient, glyphosate, have led to calls for the E.P.A. to reassess the widely used chemical. © Seth Perlman/Associated PressU.S. regulators consider it safe, but the World Health Organization has said glyphosate is probably carcinogenic.