120907_8872_feinstein038.JPG - Office of the Provost and Senior Vice President

09/07/2012 – Somerville, Mass. – Peter Walker, Director of the Feinstein International Center and Rosenberg Professor of Nutrition and Human Security, poses for a portrait outside the new Feinstein Center offices at 114 Curtis St., in Somerville on Sept. 7, 2012. (Kelvin Ma/Tufts University)09/07/2012 – Somerville, Mass. – Peter Walker, Director of the Feinstein International Center and Rosenberg Professor of Nutrition and Human Security, poses for a portrait outside the new Feinstein Center offices at 114 Curtis St., in Somerville on Sept. 7, 2012. (Kelvin Ma/Tufts University)