Water oxidation catalysis is central to many energy storage technologies. The “Up-and-Coming” Perspective by Boettcher and coworkers discusses new advances in understanding oxygen electrocatalysis on nickel−iron oxyhydroxides, highlighting the essential role of the iron sites, the electrical conductivity under active conditions, and the chemical stability. The cover depicts a layer of nickel−iron oxyhydroxide, the fastest-known water oxidation catalyst in alkaline conditions. The artwork was created by Shanna Zentner. For more information, see “Oxygen Evolution Reaction Electrocatalysis on Transition Metal Oxides and (Oxy)hydroxides: Activity Trends and Design Principles” by Michaela S. Burke, Lisa J. Enman, Adam S. Batchellor, Shihui Zou, and Shannon W. Boettcher* (Chem. Mater. 2015, 27, 7549–7558).