Areas of Research Computer-mediated communication (CMC) and the Internet; information exchange via CMC; online communities; e-learning; social network analysis; collaboration; social informatics; community informaticsSaskia Sassen is the Robert S. Lynd Professor of Sociology and Co-Chair, The Committee on Global Thought, Columbia University (www.saskiasassen.com). She is the author of Territory, Authority, Rights: From Medieval to Global Assemblages (Princeton 2008), A Sociology of Globalization (WWNorton 2007), the edited Deciphering the Globa: Its Spaces, Scales and Subjects (Routledge 2007), and The Global City. Her books have been translated into 22 languages. She is the editor of the… volume on urban sustainability in the new 14-volume Encyclopedia of Life-Systems being (Oxford: EOLSS (2006), for which she coordinated a network of researchers and activists in thirty countries.