The American Institute of Physics (AIP) advances, promotes, and serves the physical sciences for the benefit of humanity. As both a federation of physical science societies and an institute, AIP offers programs, products, and services that empower physical scientists to continue to change our world and advance the frontiers of knowledge. AIP Member Societies cover a broad range of fields in the physical sciences and collectively represent more than 120,000 scientists, engineers, educators and students in the global physical sciences community. They include the Acoustical Society of America (ASA), the American Association of Physicists in Medicine (AAPM), the American Association of Physics Teachers (AAPT), the American Astronomical Society (AAS), ACA: The Structural Science Society, the American Meteorological Society (AMS), the American Physical Society (APS), AVS: Science & Technology of Materials, Interfaces, and Processing, Optica, and the Society of Rheology (SoR). In 2020, the AIP Foundation was launched to directly support AIP programs that preserve and celebrate the history of physics, foster support for future generations of physicists, and create a more equitable and accessible field for all. AIP Publishing is a wholly owned not-for-profit subsidiary of the American Institute of Physics.