Congratulations to Roger Fu on receiving the 2025 James B. Macelwane Medal

Congratulations to Roger Fu on being selected as a 2025 recipient of the James B. Macelwane Medal, among the highest honors awarded by the American Geophysical Union to early-career scientists. Roger has established himself as a leader in the field of paleomagnetism, advancing our understanding of the magnetization of rocks and their implications for planetary history. His development of the Quantum Diamond instrument is revolutionizing the field, and he has addressed a remarkable breadth of problems—including the role of magnetic fields in Solar System evolution and Mars’ dynamo, early evidence of plate tectonics on Earth, and applications in environmental science.