"Sitting close to a television, or computer screen, isn’t bad for our eyes. It’s a variety of other factors that can cause physical fatigue.

"reducing eye fatigue is less a matter of choosing a specific display than of taking short breaks from looking at the screen."

But instead, the performance was largely similar, except when it came to the timing of events in the story. "The Kindle readers performed significantly worse on the plot reconstruction measure, ie, when they were asked to place 14 events in the correct order."

The researchers suggest that "the haptic and tactile feedback of a Kindle does not provide the same support for mental reconstruction of a story as a print pocket book does".

• The Textbook Store's Buyback Program buys back textbooks for resale thereby reducing the production and purchase of new textbooks. More than 51,000 books have been bought back in the last four buyback sessions. Books that cannot be bought back are donated to Better World Books that, in turn, helps fund literacy projects around the world. This program has diverted more than 13,000 tons of books from landfills.
• Recycle all the paper, unsold magazines, catalogs, books, mail, and newspapers. I
• Duke Stores conforms to a "Green Purchasing" policy: 

"Duke Stores will give preference to environmentally friendly products, where quality, function and cost are equal or superior to more traditional products. Products and packaging materials will contain a prescribed minimum post-consumer recycled content and will be minimized and/or substituted with more environmentally appropriate alternatives whenever possible. All products will be chosen based on efficient use of energy, natural resources, and potential for safe, non-hazardous disposal."

• -  The textbook is obsolete (89 percent) 
• -  The textbook is damaged (78 percent) 
• -  The textbook is replaced by a newer edition (93 percent) 
• -  The textbook is replaced by a different textbook (70 percent) 
• -  The curriculum or standards changed (44 percent) 
• -  The textbook is replaced by a tablet or other electronic media (11 percent) 

•   Studentinterestandbuy-in 
•   Storage of books until a disposal action is taken 
•   Advertising the event with enough notice prior to the event 
•   Finding staff time and resources to manage such a program 
•   Nothavingmultiple,convenientdrop-offlocationsoncampus 
•   Booksthatareboundwithspiralwiringcannotberecycled 
•   Convenienceandeducationabouttheprogram 
•   Laborandtransportaftercollection