 Whale semi-metals have been shown to generate large spin currents due to their topological protection of spin polarized states and high current densities. These materials also possess intrinsic non-centrosimetricity, which allows for control of spin orbit torque. However, the question remains as to how these materials relax their spins at room temperature. Researchers have now demonstrated a spin relaxation time of 1.2 nanoseconds in WTE2 in films using time-resolved Kerr rotation, TRKR, which is much longer than previously observed in other materials. They attribute this to the combination of a large spin splitting near the bottom of the conduction band, low electron, whole recombination rates, and suppression of backscattering required by time reversal and lattice symmetry operations. Additionally, the researchers find that the spin polarization is firmly pinned along the strong internal out-of-plane magnetic field induced by the large spin splitting. This work provides insight into the physical origin of long-lived spin polarization in whale semi-metals, which could be used to manipulate spins at room temperature. This article was authored by Chishon Wong, Jelly, Gene Besbaz, and others. We are article.tv, links in the description below.