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![Ray Arvidson](https://source.wustl.edu/app/uploads/2023/07/Arvidson_760-300x300.jpg)
Raymond Arvidson
James S. McDonnell Distinguished University Professor Emeritus, Department of Earth and Planetary Sciences
![James Buckley](https://source.wustl.edu/app/uploads/2015/12/James_Buckley_760-300x300.jpg)
![William B. McKinnon](https://source.wustl.edu/app/uploads/2023/08/EPS_McKinnon_W_P1002984_760-300x300.jpg)
William McKinnon
Professor of Earth and Planetary Sciences