Henry Pollack spoke at the Aquarium on November 9, 2011 on the topic of warming in the Arctic. He is an emeritus professor of geophysics at the University of Michigan, where he served as chairman of the department of geological sciences and associate dean for research in the College of Literature, Science, and the Arts. He is a science advisor to former Vice President Al Gore’s Climate Project and a contributing author to the Nobel Prize-winning Intergovernmental Panel on Climate Change Fourth Assessment Report.