The American Crystallographic Association is pleased to recognize its newest class of ACA Fellows. Election as an ACA Fellow is one of the Association's highest honors and recognizes members whose contributions to the advancement of crystallography or its applications are scientifically or socially distinguished. Fellows may be recognized for excellence in research, teaching, technological innovation, service to professional societies, leadership in academia, industry, or government, or for outstanding efforts in communicating science to broader audiences.

The American Crystallographic Association (ACA) is pleased to announce the recipients of three of its highest honors for 2027. These awards recognize outstanding achievements in crystallographic research, structural science, and diffraction physics, as well as the individuals whose work continues to advance our understanding of the structure of matter.

The ACA Newsletter, a.k.a. RefleXions, is a mainstay of communications in the structural sciences community and holds a special place among social media platforms and other background noise. It has evolved since its inception by the esteemed Dr. Jenny Glusker in the 1960’s, including moving from print editions to a digital only format. The latter was spearheaded by previous editor Dr. Paul Swepston and is noted to have saved the society large sums by circumventing printing and mailing charges.

For more than fifteen years, ACA members have looked forward to one of the Association’s most unique and engaging traditions: the ACA Puzzle.

The American Crystallographic Association proudly announces the Class of 2025 ACA Fellows—an exceptional group of scientists whose groundbreaking research, impactful teaching, and dedicated service have shaped the field of crystallography and structural science in profound ways. This year’s honorees represent a remarkable spectrum of contributions, from advancing foundational methods and developing revolutionary technologies to championing education, mentoring, and equity across the global scientific community.