People ask me about shale gas all the time - I guess it goes with being a geologist. As much as this subject interests me and as much as I care about this (and I'm sure you do too), I kind of grows tiring to answer the same questions over and over again; so I wanted to find a great resource, one from which people can get all the needed information, unbiased towards one side or the other - and I did, recently. This presentation by Anthony Ingraffea, PhD does just that. I really recommend it, it should answer most, if not all questions related to shale gas exploration. Dr. Ingraffea's research concentrates on computer simulation and physical testing of complex fracturing processes, and you can find out more about him from his page.