While their first book was insightful and interesting, this one is very disappointing. Instead of rigorous and enlightening fact-based analysis, it felt more like a lame attempt at a copycat Malcolm Gladwell. And it failed. If you enjoyed their first book, wait for the third to come out and skip this sophomore attempt.
If you liked the first book, you'll like this one...and vice versa. Covers some of the same topics, but differently. But the chapter on global warming? Read what climate scientists said about the chapter first. Solar panels adding to global warming because they're black? Hm.
I was really disappointed by this second installation of Freakanomics. It seemed that the issues addressed this time around were merely dressing on underlying political issues. I JUST finished it, and still, I can remember more from the first book than this one. This book may have been able to stand on its own, but presenting it as a sequel, of sorts, attempts to bestow undue credibility from the first onto the second; it didn't work. Knowing what I know now, I would have spent the credit on something else.