A number of international scientists who were part of the World Health Organization's International Agency for Research on Cancer (IARC) team involved in the independent research about the potential cancer risks associated with Roundup claim they received what can be termed as 'threatening letters' from Monsanto, the manufacturer of Roundup. The scientists did not take well to the request, with many firing back at Monsanto, calling the company out on what they saw as veiled threats. This came after IARC classified 'glyphosate', the active ingredient in Roundup as a probable human carcinogen. According to our sources, the letters politely ordered them to turn over all of their files or preserve them for pending legal action in the U.S. court. However, the company did not send those letters to U.S. scientists who worked with the IARC. Roundup has been linked to causing non-Hodgkin lymphoma following exposure to Roundup by farmers, landscapers, and other individuals. The recently formed Roundup MDL No. 2741 is presided by U.S. District Judge Vince Chhabria and the first trial in the Roundup litigation is set for June 18, 2018, in the Superior Court for the County of San Francisco. Plaintiffs allege that they or their decedents developed non-Hodgkin's lymphoma after using Roundup over the course of several or more years. Monsanto continues to claim that the product is safe for individual consumers and encourages its use by homeowners.