Marc worked in both academia and the oil industry as a geophysicist. He retired to Tucson in 2010; where he became an adjunct professor in Geosciences, worked with grad students on their projects, and taught a grad/undergrad course. Also worked to bring geoscience to middle school students and volunteered at J.B.Wright Elementary to help remedial students. Marc joined Or Chadash shortly after moving to Tucson. Eventually, he got involved with the Social Justice and Action Committee and became chair. He participated in High Holiday services by sounding the shofar.