A Pennsylvania bee farmer has a theory why this is happening. He thinks it’s because of Genetically-Modified crops engineered to produce Bt, a naturally occurring pesticide.
I say naturally occurring, because it’s present in small quantities in the environment. In these Genetically-Modified crops however, it’s another story. Crops engineered to produce Bt do so in very large quantities. It’s produced by every cell in the plant including roots, stems, leaves and flowers. It’s also present in the pollen of these plants. The amount of Bt in these plants is enough to trigger allergies in some people, and irritate the skin and eyes of farmers who handle the crops. In India, when sheep were used to clear a field of left over Bt cotton, several sheep died after eating it.