Since the development of the first edition alternative/renewable/sustainable/reserves energy pictures have changed significantly. This second edition will incorporate information relating to these changes. Shale"fracking," natural gas reserves increases, and hybrid electric vehicles will alter the energy usage pattern worldwide. The following key adjustments to this new edition are as follows: all chapters will be updated with the introduction of new material. two new chapters are being added on fracking and natural gas in the united states and hybrid and electric vehicles. additions to and deletions from the chapter review and homework problems. a reworked solutions manual. although the first edition made use of web sites, the second edition increases and broadens the uses to reflect the increasing company-based information on the www and to reflect the aids now commonly available-all in the context of securing appropriate permissions. For example, thermodynamic and physical properties can be routinely and easily accessed on the web.