On errors in the "abortion lowers crime" study http://isteve.blogspot.com/2005/11/im-shocked-shocked-to-see... overview of freakonomics 2 and how it shouldn't have been surprising that the errors were numerous and more obvious than in the original, due to the authors being less familiar with the topics in addition to selection bias http://www.stat.columbia.edu/~cook/movabletype/archives/2009...

Detailed discussion of blatant, blatant errors on their article refuting climate change. Makes you wonder if they knew their contrarian position was weak, and still put it in the book for controversy and the headlines it brings. http://climateprogress.org/2009/10/12/superfreakonomics-erro...