Research by Huyen Vu*, Jeremiah W. Woodcock, Ajay Krishnamurthy, Jan Obrzut, Jeffrey W. Gilman and E. Bryan Coughlin* was recently published in ACS Appl. Mater. Interfaces. This paper is entitled "Visualization of Polymer Dynamics in Cellulose Nanocrystal Matrices using Fluorescence Lifetime Measurements". Cellulose nanocrystal nanocomposites are ideal for advanced applications requiring both strength and toughness. Here, we explore the effect of confinement and water content on polymer dynamics to provide insights into mechanical performance.