This video was taped at Vanderbilt University as part of the Osher Lifelong Learning Institute.
Earlier videos in this series:
Part 1: http://blog.press.princeton.edu/?p=9307
Part 2: http://blog.press.princeton.edu/?p=10029
Dr. Weintraub is author of How Old Is the Universe? You can read an excerpt of this book here.











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A video from a university is way better than national geographic. If only there were more video’s like this.