This is the 2015Special Edition, complete with 3-D cover.  This is another in the series that will surely get a lot of circulation time. Full color photographs, appealing magazine style lay-out and amazing facts will give even the most reluctant reader something to spark the desire to read.  A must for a school library collection; however, be prepared for replacing the book after a few months.  This is a heavily circulated book and with regular trade binding it will not stand up well to school library use. Better to see it used and falling apart than sitting on the shelf collecting dust though!