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Paul Tough is the author of *Whatever It Takes: Geoffrey Canada's Quest to Change Harlem and America*. He is an editor at *the New York Times Magazine*, where he has written extensively about education, poverty and politics, including cover stories on the Harlem Children's Zone, the post-Katrina school system in New Orleans, and No Child Left Behind and charter schools. He has worked as an editor at *Harper's Magazine* and as the founding editor of Open Letters, an online magazine of first-person correspondence, and as a reporter and producer for the public-radio program *This American Life*, where he reported, most recently, on the parents enrolled in the Harlem Children Zone's Baby College. His writing has appeared in *Slate*, *Esquire*, *GQ*, and *the New Yorker*. He lives with his wife in New York City.

Siva Vaidhyanathan, Professor of Media Studies and Law at the University of Virginia, is the author of Copyrights and Copywrongs: The Rise of Intellectual Property and How It Threatens Creativity and The Anarchist in the Library: How the Clash between Freedom and Control is Hacking the Real World and Crashing the System.

Presiding over the Functional Magnetic Resonance Imaging Center, Joy Hirsch, professor of functional neuroradiology, has established and directs a research center focused on medical applications, education, and the study of brain, behavior, and therapy-induced cortical effects utilizing the developments in functional Magnetic Resonance Imaging (fMRI). Dr Hirsch has a joint appointment in the Department of Radiology and the Center for Neurobiology and Behavior, and her laboratory includes a large number of graduate students and postdoctoral students from the graduate school. Dr Hirsch joined Columbia from Memorial Sloan-Kettering Cancer Center and the Weill College of Medicine at Cornell University where she founded the fMRI laboratory and pioneered the introduction of brain-mapping procedures for neurosurgical planning. Using fMRI, her laboratory made fundamental contributions to the understanding of sensation and perception, language and the cognitive processes, and brain regions that are modified by specific drugs. These initial studies were built upon research done by Dr Hirsch as a professor at Yale University School of Medicine, where she focused on the cortical mechanisms directly involved in human visual processing, serving as a foundation to connect the advantages of fMRI to ongoing and new research directions at Columbia University.

David Rodowick is a professor of Visual and Environmental Studies at Harvard University. He is most recently the author of *The Virtual Life of Film* (Harvard University Press, 2007) and *Reading the Figural**, or, Philosophy after the New Media *(Duke University Press, 2001), and his edited collection,* The Afterimage of Gilles Deleuze's Film Philosophy*, will be published by the University of Minnesota Press.

Jim Gettys is currently working on the One Laptop Per Child project, which uses open source systems for education on very inexpensive computers. He was previously at HP's Cambridge Research Lab working on the X Window System with Keith Packard, both on desktops and on embedded systems such as the HP iPAQ, where he helped start the handhelds.org project from which all Linux handheld and cellphone development stems. Jim worked at W3C on loan from Compaq Computer Corporation's Industry Standards and Consortia group from 1995-1999. He is the editor of the HTTP/1.1 specification (now an IETF Draft Standard). Jim Gettys joined W3C in 1995 on secondment from Digital (now part of HP). Jim is one of the principle authors of the X Window System, edited the HTTP/1.1 specification for the IETF, and and one of the authors of AF, a network transparent audio server system, Jim's interests and experience span large scale systems design, implementation and management, collaborative systems, teleconferencing and most areas of Web technology. He is interested in mobile desktop and handheld distributed computing.

The majority of Joe McKendry's work consists of two areas of focus: commercial and architectural illustration, which is produced for magazines, newspapers, or architects and studio painting, where his focus is producing a body of work to be shown in a gallery. *Beneath the Streets of Boston: Building America's First Subway*, McKendry's first children's book, was an introduction to the challenges of working in a new 'medium'.