Slightly off topic, but here is a good read on how the world is just nibbling around the edges of the whole environmental movement. It's a noble effort to be sure, but as a planet we're a long way from the tipping point.

Amazon.com: Getting Green Done: Hard Truths from the Front Lines of the Sustainability Revolution: Auden Schendler: Books

Here's another one that shed's some light on the whole SUV thing

Amazon.com: High and Mighty: The Dangerous Rise of the SUV: Keith Bradsher: Books

Both books can be had used for less than a buck at Amazon