As I mentioned yesterday, I participated in a panel discussion at the American Enterprise Institute (AEI) on environmentalism. The event centered on Roger Scruton's new book, "How to Think Seriously About the Planet: The Case for an Environmental Conservatism." (My fellow panelists included Daniel Sarewitz of Arizona State University and Kenneth Greene, an AEI resident scholar, who has posted his comments.) I'm traveling today, so I don't have time to gather my thoughts on the event or delve into the book (will return to it in a few days). But meanwhile, AEI's Steven Hayward captured its theme well, when he said