Trunk is a new online environment designed to facilitate teaching, learning, and assessment at Tufts. Trunk enables the sharing of knowledge and new models of collaboration within and across disciplines, at Tufts and beyond. Trunk is powered by Sakai, an open source collaboration and learning environment that has been developed by the educational community. Sakai is used at over 350 schools around the world to support teaching, learning and scholarly activity both inside and outside the classroom. Trunk is the version of Sakai that has been configured and customized to meet Tufts University’s diverse needs.