A review from Professor Markus Buehler, former postdoc Shengjie Ling and David Kaplan of Tufts University was featured on the cover of the April edition of Nature Reviews: Materials. The paper, entitled “Nanofibrils in nature and materials engineering,” summarizes the hierarchical design strategies of cellulose, silk and chitin, focusing on nanoconfinement, fibrillar orientation and alignment in 2D and 3D structures. See the cover here.