Through the NSSA Fellowship Program, the NSSA recognizes members who have made significant contributions to the neutron scattering community in North America in one or more of the following areas: Advances in knowledge through original research and publication. Innovative contributions in the application of neutron scattering. Contributions to the promotion or development of neutron scattering. Techniques service and participation in the activities of the NSSA or neutron community. Bjørn Clausen named Neutron Scattering Society of America fellow for his experiments and modeling that use neutrons to determine how a material's structure affects its performance while subjected to extreme conditions. This work supports the material science needed to ensure the safety and surety of the nuclear stockpile mission.