Jan. 15, 2016, Philadelphia, Pennsylvania, USA: Vice president JOE BIDEN, right, takes a moment to reflect as he listens

Jan. 15, 2016, Philadelphia, Pennsylvania, USA: Vice president JOE BIDEN, right, takes a moment to reflect as he listens to Penn President AMY GUTMANN and leading cancer researchers at the roundtable discussion. Biden launched his Moon Shot mission to cure cancer with a tour of the University of Pennsylvania s Abramson Cancer Center and a roundtable conversation with researchers. Philadelphia USA - ZUMAm67_ 20160115_zaf_m67_012 Copyright: xEdxHillex