I seem to speculate the GMO Seed being planted could withstand/tolerate the pesticide/fungicide being sprayed on/in the ground prior to or during planting corn. I can't understand or believe the GMO seed itself being planted as the main single cause of bee death. Something else contributed to the planting process may have impacted the bees, as well as other factors. Such as, pesticides being used to eliminate emerging weeds and the GMO seed has the ability to withstand higher concentration levels of pesticide over a period of time in the soil. Thus affecting the honey bees. An observation of Spraying in Corn or Cotton crops via Boom sprayers, it is quite evident that spray drifts in the air to surrounding areas that adjoin the crop fields. (had peach leaves get burned after a spraying) There are other factors that may be coming into play we are not taking into account. Drought, Excess Moisture & mold, virus, bacterial infected plants the bees are attracted to, other microbes. Chemical compounds used in pesticides seem to be patented by different companies making their brand somewhat different than their competitors brand and who knows what the affects of some of the newer brands (those 10 yrs. ago) have on insects/bees and other life forms, based upon the chemical composition change. Looks like it's still a mystery.