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A Grand Synthesis of Knowledge - Have you ever wondered: How do various scholarly discourses—cosmology, geology, anthropology, biology, history — fit together? Taught by historian David Christian, Big History offers a unique opportunity to view human history in the context of the many histories that surround it. Over the course of 48 thought-provoking lectures, he'll serve as your guide as you traverse the sweeping expanse of cosmic history—13.7 billion years of it—starting with the big bang and traveling through time and space to the present moment.