Charan Ranganath is the Director of the Memory and Plasticity Program and a Professor of Psychology and Neuroscience at the University of California at Davis. His new book, Why We Remember: The Science of Memory and How it Shapes Us, is a radical exploration of human engagement with memory, asking new questions about imagination, intention, attention and emotion. Joining Ranganath to discuss it is Alex Wilkins, reporter for New Scientist.

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