Ho sposato Wikipedia? di Umberto Eco Quanto ci si deve fidare dell'enciclopedia on line? Ecco cosa mi è capitato e alcune regole per accertare l'esattezza delle informazioni
NASA Images, created through a partnership between NASA and the Internet Archive, offers public access to NASA's image, video, and audio collections in a single, searchable online resource: http://www.nasaimages.org
Opening Up Education The Collective Advancement of Education through Open Technology, Open Content, and Open Knowledge Edited by Toru Iiyoshi and M. S. Vijay Kumar Foreword by John Seely Brown
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