So, someone on AMG (Anonymous Coward, I think, but not absolutely sure) was talking about how Roundup, the herbicide in common use, caused cancer and that the manufacturer hid the damning information. As it turns out, it seems that the main source of this claim, one Aaron Blair of the International Agency for Research on Cancer, apparently ignored a major study that he himself was a senior researcher for that stated that Roundup doesn't cause cancer:
"About that evidence: According to a new Reuters investigation, Aaron Blair, the scientist who led the IARC’s review panel on glyphosate, had access to data from a large study that strongly suggested that Roundup did not cause cancer after all—but he withheld that data from the RoundUp review panel. Weirder still: Blair himself was a senior researcher on that study."
If anyone wonders why people distrust pronouncements from scientists about things like alleged "man-caused global climate change" and many other fads that are hobby-horses, this would be Exhibit A, I think.