I just finished reading "Chasing Chiles – Hot Spots Along the Chile Trail." It is a good and interesting book. It appears that the authors are more interested in climate and other ecological changes, than any specific fascination with Chile Peppers, but they do a good job of integrating the subjects and keeping the reader informed and interested, both in Chile Peppers, and the ecological state and future of the earth.
Chapters are devoted to types of Chiles and the areas in which they are traditionally grown, with the authors visiting the locations and reporting on how climate and ecological change have affected the crop. The origins of the Chile's are discussed in good detail. The book also discusses Chile's in general and how we have domesticated them. The book also contains a number of recipes, which include the Chile's that they have researched.
It is a good read and I highly recommend it.
For those of you with Kindles or Ipads, you can get the digital edition for $9.99 at amazon.com.