Emails released as part of a federal lawsuit against Monsanto suggest the agriculture supplier cozied up to an EPA regulator and sought to whitewash studies to ignore potential cancer-causing effects of an herbicide found in weed-killer. NPR reports the emails show the company asked scientists to co-sign safety studies on glyphosate, an active ingredient in Roundup, after the International Agency for Research on Cancer found glyphosate may cause cancer. The emails show company representative William Heydens suggesting the company "ghost-write" a finding. He wrote, according to NPR, "we would be keeping the cost down by us doing the writing and they would just edit & sign their names so to speak." The emails ... also show EPA regulator Jess Rowland boasting in a 2015 email to Monsanto that, "If I can kill this I should get a medal," referring to a Monsanto effort to stop a government investigation into glyphosate. CBS reported another email from a Monsanto employee to an EPA director said, "I doubt EPA and Jess can kill this, but it's good to know they are going to actually make the effort." The company defended the relationship in an interview with Bloomberg. Rowland ... has left the EPA's pesticide division and is involved in about two dozen lawsuits related to the company not disclosing potential cancer-causing hazards of glyphosate.