Bob Murphy's critique of Nordhaus is up at IER. Nordhaus's original piece from the Spring is here.
By the way, Krugman was Nordhaus's RA at Yale as an undergrad.
Murphy Interview With Unbiased America
11 hours ago
Daniel Kuehn is a doctoral candidate and adjunct professor in the Economics Department at American University. He has a master's degree in public policy from George Washington University.