Last January, a Stanford group published in Science that a 1.5 nm film of NbP measured about 34 µΩ·cm at room temperature. Copper at the same thickness is around 100 µΩ·cm. Tech press went a bit wild ("copper beaten!"), and then mostly moved on, as it does. I think a year is enough time to ask the boring follow-up questions. Did it reproduce? Did anyone in the industry actually move on it? Well, the result held up. IBM Zurich and Max Planck Dresden confirmed the mechanism with a clean anisotropy measurement on mesoscopic crystals: the resistivity scales beautifully along the c-axis, and badly along the b-axis. Exactly what the band structure of the NbP predicts. The more interesting development is that NbP is no longer the main character. This year, an ML+DFT screen across around 3,000 candidates flagged TiS, ZrB₂, and the mononitrides of Mo, Ta, and W as matching or exceeding NbP for surface transmission.…