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Lisa Randall is a theoretical physicist and leading expert on particle physics and cosmology. She is the Frank B. Baird, Jr. Professor of Physics at Harvard University. Her research includes elementary particles and fundamental forces and she has studied a wide variety of models, including about extra dimensions of space. Her most recent research is about dark matter, also the subject of her new book. Professor Randall’s two previous books, Warped Passages and Knocking on Heaven’s Door, were named among the 100 most influential books by The New York Times. She has been named one of Time’s 100 Most Influential People in the World and Esquire’s 75 Most Influential People of the 21st Century. Professor Randall's new book is Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe. She was in the Northwest to speak at Town Hall Seattle, presented by Town Hall and University Book Store, as part of The Seattle Science Lectures.