"With millions of small steps available for people to green their daily lives, it's pretty easy to go burn-out. Should I stop flying? Unplug my cell phone charger? Or buy a Prius? Or a clothesline? Comparing the trade-offs between decisions takes considerable time and effort; you could end up a crispy little mass mumbling on your bamboo rug. But a professor at the University of Cambridge was written a little something to assist us in our decision-making process, destroying a few 'Mythconceptions' in the process.
David MacKay, a professor at the University of Cambridge, to the rescue. Dr. MacKay has published an online tome "Sustainable Energy - Without the Hot Air" (free PDF download here) which relies on Kilowatt-Hours to quantify these decisions. It's incredibly comprehensive - 409 pages - and provides the apples-to-apples that points you in the right direction."
http://www.treehugger.com/files/2008/07/one_year_cell_p.php
http://www.inference.phy.cam.ac.uk/sustainable/book/tex/cft.pdf
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