I'm not a big fan of many things that end in "-cide"

Herbicide being one of those.  That being said, it appears that the Left has done what it will do, and lied its ass off about RoundUp.

Hundreds of cancer patients promptly sued Monsanto, claiming the company had concealed the danger of carcinogenicity, notwithstanding the fact that it would be hard to find a farmer who hadn’t been exposed to glyphosate. The European Union said it would consider IARC’s finding when deciding whether to continue to allow glyphosate to be used in Europe. “Environmentalists” had scored a major coup. 

But the whole thing turned out to be a fraud. Reuters has investigated, aided by access to deposition testimony in one or more of the lawsuits against Monsanto, which evidently was not subject to a protective order. Briefly put, the author of the IARC’s carcinogenicity study, Aaron Blair, an epidemiologist from the U.S. National Cancer Institute, covered up his own research showing that exposure to glyphosate did not lead to a higher incidence of cancer in humans.

As Powerline points out, you cannot trust any "scientific" studies from a Leftist organization anymore.  Their politics win out over truth, reality, and facts.