Marco Dees was a graduate student in our department, receiving his Ph.D. in 2015. He wrote a dissertation on the metaphysics of quantities, space, and time, co-advised by Dean Zimmerman and Jonathan Schaffer. He had begun to publish papers based on his thesis (in Thought and Pacific Philosophical Quarterly), and to teach, first at Bard College and then Vassar. He tragically died in a climbing accident in Grand Teton National Park.
[Further information: https://marco-dees.muchloved.com]