Front Cover: This picture contains thestructures of copolymer chains and particlesas well as the micelles with various distri-butions of two solutes in them, illustratingthat a multicompartment micelle can storetwo agents within separate nanoscopic

compartments simultaneously, and the dis-tribution of the agents can be tailored easilyby changing the chemistries of the species.Further details can be found in the article byJ. Xia and C. Zhong*on page 1654.