Plaintiffs in U.S. lawsuit say Monsanto ghostwrote Roundup studies

Employees of Monsanto Co ghostwrote scientific reports that U.S. regulators relied on to determine that a chemical in its Roundup weed killer does not cause cancer, farmers and others suing the company claimed in court filings.The documents, which were made public on Tuesday, are part of a mass litigation in federal court in San Francisco claiming Monsanto failed to warn that exposure to Roundup could cause non-Hodgkin's lymphoma, a type of cancer.Plaintiffs claim that Monsanto's toxicology mana