I'm going to offer a point of view different from the rest. I think this book focusses almost exclusively on environmental issues, and practically equates "making a difference" to "saving the environment". Well, yes, there are remarks about "improving society", but no clear path to doing any of those things. (...) The book does not contain any lead into careers that address world poverty or undernourished children or any of the other burning issues that affect the world everyday, unlike a dwindling dolphin population. Not that I don't think that a dwindling dolphin population is an important issue, but it is less important than starving children groping through some rubble heap in search of food. In fact, unless that part of the "starving population" is reeled out of poverty, they will continue to have dire impact on the environment faster than any socially-responsible fund manager can write out "green" dividend checks. This book provides "first-world denizens" the distorted view that fixing environmental issues is all there is to it (and calls itself "The Expanded Guide"). This is most likely related to the author's own background and focus on environmental issues. But it doesn't measure up for me.