Abstract : Ferroptosis In article 2202562 by Longchen Wang, Jianrong Wu, Tao Ying, and co‐workers, an aciditybiodegradable Ir‐Hemin nanosheet is presented to achieve notable ferroptosis efficacy through multiple regulatory pathways, including SDT‐triggered ROS generation, GPX4 inhibition and HO‐1 upregulation‐mediated endogenous Fe 2+ elevation. This work paves a new way for future studies exploring nanomaterials as ferroptosis inducers.