In their New York Times article, How Green Is My iPad?, DANIEL GOLEMAN and GREGORY NORRIS evaluate the ecological impact of e-readers versus the good old-fashioned book.
They finish the article…
So, how many volumes do you need to read on your e-reader to break even?
With respect to fossil fuels, water use and mineral consumption, the impact of one e-reader payback equals roughly 40 to 50 books. When it comes to global warming, though, it’s 100 books; with human health consequences, it’s somewhere in between.
All in all, the most ecologically virtuous way to read a book starts by walking to your local library.
To read the full article, go to http://www.nytimes.com/interactive/2010/04/04/opinion/04opchart.html