The American Crystallographic Association is pleased to share news from our publishing partnership with AIP Publishing: Structural Dynamics is entering a new chapter with the appointment of Mark Wilson as Editor-in-Chief.
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And just like that, we are at the start of December, and I’m writing my last President’s Column for RefleXions. I find it hard to believe how quickly the year went by. It has been an honour to serve you all as President during our 75th Anniversary year. This year has been one of ups and downs, challenges and opportunities, and was highlighted by our Annual Meeting in Lombard.
We’re pleased to announce the American Association to Advance Powder Diffraction (AAAPD), a grassroots organization that was formed to be a voice for the powder diffraction community to ensure a bright future for this field.
We are at a pivotal moment for U.S. structural science. The National Academy of Sciences (NAS) has announced that, effective January 1, 2026, it will withdraw from the International Union of Crystallography (IUCr) and dissolve the U.S. National Committee for Crystallography (USNC/Cr). This action ends a long tradition of national representation and threatens the continuity of U.S. engagement with the global crystallography community.
The American Crystallographic Association proudly recognizes three outstanding scientists whose work is advancing the frontiers of structural science:
The U.S. crystallographic community is undergoing a critical transformation. Since 2018, when the National Science Foundation (NSF) designated crystallography a “mature” field and ceased direct support for the U.S. National Committee for Crystallography (USNC/Cr), the committee has been sustained by private donations, a single NIST grant, and careful budgeting. This patchwork funding model, however, has proven unsustainable. For example, NAS is paid for its services and has not kept pace with basic USNC/Cr management responsibilities, such as updating committee appointments, maintaining its public website or interacting with IUCr.
The ACA is proud to celebrate a major milestone in the career of Dr. James Kaduk, who has been elected a 


















