I'd be happy to talk about that.
My work spans agricultural communities but also Arctic communities. When I live in the Arctic, work in the Arctic, and study the Arctic, I see that the Arctic is the world's dumping ground for chemical pollution. A huge amount of chemicals that are used in agriculture in the south migrate on dominant winds, get locked into the Arctic because it's cold, get into the food supply, and right now, if you want to talk about health impacts, breast-feeding women are giving huge contaminant loads to their babies. And it's affecting all sorts of well-documented studies showing all kinds of neonatal problems associated with chemical loads being passed on through the food chain to women, all the way to their babies, and a lot of it has to do with agriculture and the use of chemicals in the environment.
So when we start talking about herbicide-tolerant crops, for me as an ecologist, my thinking is that we need to get away from using herbicides. Herbicides have well-known impacts. As my friends have said, there are health issues associated with obesity and all kinds of things, but there are also well-linked studies to cancer and whatnot. And so modifying life forms to make them more susceptible to herbicides and resistant to herbicides, it makes no sense from an ecological perspective.