The front cover shows a hydrated inorganic nanoporous system, calcium silicate hydrate (C-S-H), built on the basis of an 11 Å tobermorite structure. Crystalline sheets of silica tetrahedra (yellow) and calcium ions (cyan spheres) are separated by quasi-two-dimensional nanopores containing water (red and white sticks). NMR relaxometry experiments study the diffusion of water by observing the magnetic relaxation of the hydrogen nuclei. On page 1220 (DOI: 10.1002/qua.24708), Jayesh Bhatt, Peter J. McDonald, David A. Faux, Nicholas C. Howlett, and Sergey V. Churakov study this process using molecular dynamics simulations by evaluating a dipolar spin-spin correlation function that yields the relaxation rates. At lower NMR frequencies, the stronger the surface interaction, the higher the relaxation rates of water.