Did you know that
e-books are "greener" than printed books?
My Kindle doesn't need to be plugged into the electric grid continuously. It's run by energy stored (in a battery), just as the solar energy which created the tree growth which was transformed using a large amount of energy (paper mills, printing presses, bookbinding plants, delivery trucks) into the printed book is stored. As well as the solar energy stored so I can read either my Kindle or my printed books indoors and at night.
Bill