Group members are leaders in a wide range of experiments, including: investigations of the flavor and spin structure of the nucleon (STAR at RHIC, Belle II at KEK); studies of parity and time reversal violation between nucleons (NIST, SNS, LANSCE, JPARC, JLAB, FRM), measurements of neutrino properties (Fermilab, SNS, SURF, LNGS), neutron decay and neutron interferometry (NIST, LANSCE, SNS, ISIS, ILL), and searches for possible exotic spin-dependent interactions. Local facilities include a low-energy neutron source (LENS) available for neutron detector development and testing, high-bay facilities for large-scale fabrication, professional and student machine shops, a polarized 3He lab, a dilution refrigerator, and a vibration isolated lab for weak force measurement.