MP4 : Building Bridges program with WTPN with their guest Dr. Charles Cogan, Belfer Center for Science and International Affairs, Harvard University (August 21, 2012)FLV : Building Bridges program with WTPN with their guest Dr. Charles Cogan, Belfer Center for Science and International Affairs, Harvard University (August 21, 2012)MP4 FOR IPOD (edge) : Building Bridges program with WTPN with their guest Dr. Charles Cogan, Belfer Center for Science and International Affairs, Harvard University (August 21, 2012)MP3 : Building Bridges program with WTPN with their guest Dr. Charles Cogan, Belfer Center for Science and International Affairs, Harvard University (August 21, 2012)