Mark lives and works in the U Street neighborhood of Washington DC. A PhD epidemiologist by training, he uses photography to explore patterns of movement in human populations, focusing on architecture as evidence of often-invisible social, environmental, and economic processes. Mark has family roots in the desert landscape of Almeria, Spain, and he is currently documenting the remains of old movie sets constructed in the region during the 1960s and 1970s. Mark's work has been featured at various galleries in Washington DC and at Galería Acanto in Almeria, Spain and appears in the DC Art Bank and numerous individual collections. He is an active member of the Mid City Artists and the Washington Project for the Arts. He was recently selected as a finalist for the 2011 Janet & Walter Sondheim Prize.