He is a professor of biology in the Center for Natural Sciences at Goucher College.
[1] In 1977, Slocum earned a Master of Science from Ohio State University.
His master's thesis was titled Effects of SO₂ and pH on the ultrastructure of the Trebouxia phycobiont of the pollution-sensitive lichen Parmelia caperata (L.) Ach.
His dissertation is titled Studies on the localization of phytochrome and calcium in light-and-gravity-stimulated plants.
[7] From 2011 to 2012, Slocum was a rotating program director of the National Science Foundation's Division of Integrative Organismal Systems.