I agree with Jonah that many conservatives seem to adopt liberal positions on environmental matters as well as to be swayed by Malthusian population arguments. What I find more disturbing, however, is that so many conservatives adopt the conventional wisdom that the only way to ensure environmental protection is through extensive government regulation or other intrustions into economic and other private affairs. I find this to be true even among those who are skeptical of government regulation, and especially true among Republican elected officials. Thus, many conservatives call for “reasonable” regulation, and accept the premise that less regulation means less environmental protection. As I have written elsewhere, this is complete nonsense — and it undermines most principled arguments against federal regulation.