In the wake of last month's deadly shootings in Newtown, Conn., President Obama said the U.S. must consider new ways to combat gun violence. Public policy professor Philip J. Cook, who has long studied the effectiveness of gun control efforts in this country, participates in this live "Office Hours" webcast interview on the topic at noon Friday, Jan. 11, 2013.A recent article in the (Raleigh) News and Observer describes the many media interviews Cook has done in the wake of the Newtown killings. He is co-author of the book "Gun Violence: The Real Costs." His recent scholarly articles include "Q&A on Firearms Availability, Carrying, and Misuse" and "The Economist's guide to crime busting." He has served as a consultant to the Department of Justice and been vice chair of the National Research Council’s Committee on Law and Justice. "Office Hours" is Duke's live webcast series for the university community, and others, to engage with professors about their research and scholarship.