Hutzler's group uses cold and ultracold polar molecules (including polyatomics and laser-cooled species) as exquisitely sensitive probes of fundamental symmetry violation, searching for the electron electric dipole moment and other signatures of physics beyond the Standard Model; the group is developing molecules with enhanced sensitivity and internal co-magnetometry. For context, this complements the established paradigm of NV-diamond ensemble magnetometry (Hahn-echo/DEER, nanoscale NMR, T1 relaxometry) operating near pT/√Hz sensitivity.