Google RA Reylea and his many studies on amphibians and roundup. Anything that can turn a normal healthy amphibian into a hermaphrodite (or worse) should be a major concern for everyone. Bees, as you well know, have much shorter lifespans but that isn't reason to be a skeptic. Rick Reylea has been leading this type of research for a very long time; your wife may know him? He's at Penn State the last I heard.