GMO Bt toxins: Safe for people and environment or supertoxins?
The chief benefit claimed for GMO insecticidal Bt crops is that unlike conventional pesticides, their toxicity is limited to a few insect species. But a new peer-reviewed analysis systematically compares GMO and natural Bt proteins and shows that many of the elements contributing to this narrow toxicity have been removed by GMO developers in the process of inserting Bt toxins into crops. Thus developers have made GMO insecticides that, in the words of one Monsanto patent, are “super toxins”.
The authors additionally conclude that references to any GMO Bt toxins being “natural” are incorrect and scientifically unsupportable.