[Perspective] Squeezing into superconductivity

The recent report of superconductivity in hydrogen sulfide (H2S) by Drozdov et al. (1) at a record high superconducting critical temperature Tc of 203 K and at high pressure (153 GPa) triggered excitement from both a fundamental and technological perspective. On page 1303 of this issue, Troyan et al. (2) confirm the finding by using an elegant and unexpected implementation of the Mössbauer technique at the third-generation synchrotron facility in Grenoble, France. They measured the Meissner eff