I think it's pretty obvious that the main culprit is - drum roll - Chemicals! Just their names sound evil: chlorothalonil, mycobutanil, simazine, glyphosate, chlorpyrifos, to name just a few of those that are commonly found in beehives. In the December, 2009 issue of Bee Culture Magazine (I love to read it, even though it's mostly about honey bees) the Editor, Kim Flottum, writes about the results of a U.