Monsanto is under fire because the company's herbicide, Roundup (active ingredient: glyphosate), is suspected of being carcinogenic. The longstanding dispute about glyphosate has been brought to a head by the release of explosive documents. Monsanto's strategies for whitewashing glyphosate have been revealed in internal e-mails, presentations and memos. Even worse, these Monsanto Papers" suggest that the company doesn't even seem to know whether Roundup is harmless to people's health. "You cannot say that Roundup is not a carcinogen," Monsanto toxicologist Donna Farmer wrote in one of the emails. "We have not done the necessary testing on the formulation to make that statement." The email ... is one of more than 100 documents that a court in the United States ordered Monsanto to provide as evidence after about 2,000 plaintiffs demanded compensation from Monsanto in class-action suits. They claim that Roundup has caused non-Hodgkin's lymphoma, a form of lymph node cancer. "The Monsanto Papers tell an alarming story of ghostwriting, scientific manipulation and the withholding of information," says Michael Baum, a partner in [a] law firm ... bringing one of the US class actions. Monsanto ... also behaved irresponsibly when it comes to the question of Roundup's absorption into the body. Back in 2002, the company's experts discovered that "between 5 and 10 percent" of the substance penetrated the skin of rats. As a consequence, the author of the email wrote: "We decided thus to STOP the study."