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Heinz Pagels Memorial Lecture, Aspen Center for Physics, June 2011. Videography by Grassroots TV12, Aspen CO. Editing by Rye Zupancis. Slides are available at physics.upenn.edu/~pcn/110622aspen.pdf
Heinz Pagels Memorial Lecture, Aspen Center for Physics, June 2011. Videography by Grassroots TV12, Aspen CO. Editing by Rye Zupancis. Slides are available at physics.upenn.edu/~pcn/110622aspen.pdf