If by “best” you mean the first book to list ClimateProgress as a Resource, then the answer is easy. It’s The Live Earth Global Warming Survival Handbook: 77 Essential Skills To Stop Climate Change.
Seriously, though, that is a good book, which I’ll blog on later — and ClimateProgress will be blogging all day Saturday on Live Earth itself, including blogging from the U.S. concert.
I will say that the best “clean technology” book I have read in a very long time is The Clean Tech Revolution: The Next Big Growth and Investment Opportunity. I’ll be posting a longer review soon, but you should buy it now you want to know what is hot and what is not in environmental technology.