Al Gore's recent book provides an excellent up-to-date introduction about green technology. It's really not that political.
http://www.amazon.com/Our-Choice-Sol.../dp/1594867348
Global Warming and Climate change demystified is also an excellent introduction to the basic science
http://www.amazon.com/Global-Warming.../dp/0071502408
The problem with Climate change is that the best reading material are in glossy PDFs and unreadable on most ebook readers.
also, this free ebook would help
http://www.aip.org/history/climate/index.html
But let me reiterate. Gore's Our Choice has the most up-to-date information.
Copenhagen Diagnosis also provides a good synopsis of the latest research.
http://www.copenhagendiagnosis.org/d...d/default.html