One of the facts she offered: "The largest single source of carbon emission in the United States is electricity production at 39 percent... (p. 134)" This particularly caught my eye because, since I got DSL, my PC is on and consuming electricity every waking minute that I am in the house. Oh dear... Well... Use the EPA's Personal Greenhouse Gas Calculator to estimate your carbon footprint. Consider your fuel economy. Look at the dismal graphic from the Carbon Dioxide Information Analysis Center.
The other day on a librarianly discussion list, NGC4Lib (Next Generation Catalogs For Libraries), Bruce Van Allen pointed out that "the printed-once, read-many-by-many book is far more versatile and energy-efficient than any digital form I've seen or heard discussed. Probably more durable, too. Let's acknowledge the continued economic and logistical superiority of physical books & periodicals over digital docs for: * reading without using more electrical power every single time (Al Gore and the polar bears are watching you); * reading by many people over time without needing any more equipment, printer toner, staples, paper, etc.;..." Thanks, Bruce.