FYI... National Academies Press Makes All PDF Books Free to Download <http://click.newsletters.nas.edu/?ju=fe2d157274630575751c76&ls=fded17707c6c007576107573&m=feef12737c620c&l=fe941573766c057972&s=fe2c1778736c077c751674&jb=ffcf14&t=>As of today all PDF versions of books published by the National Academies Press will be downloadable to anyone free of charge. This includes a current catalog of more than 4,000 books plus all future reports printed by NAP. "Our business model has evolved so that is now financially viable to put this content out to the entire world for free," said NAP executive director Barbara Kline Pope. "This is a wonderful opportunity to make a positive impact by more effectively sharing our knowledge and analysis."