Agricultural research raises fundamental ethical and value questions going beyond those in other fields both because of its public funding and because its results have significant impacts on habitats and other species. Questions about the sustainability of modern agriculture, which are shared with other sectors, require us to examine alternative visions and structures. These can be seen to range from status quo preserving ideologies to change-oriented utopias. It is argued that at the national level current ideologies—which include positivistic approaches and (...) belief in the neutrality of technology—mask real structural and policy choices as well as their ethical and value implications. At the international level, the export of fossil-fuel based modes of agriculture to the developing countries raises additional structural, policy, value, and ethical issues. (shrink)