DR. SELBY CULL is an assistant professor of geology at Bryn Mawr College in Pennsylvannia. She is a planetary geologist, who has worked on the 2008 NASA Phoenix Mission to Mars, in addition to several orbital missions. Long interested in science writing for the public, Selby received her M.Sc. in science writing from the Massachusetts Institute of Technology in 2006. Selby worked as a Science Journalist for JYI for 1.5 years, before serving on the Executive Management from 2003-2006 as Senior Research Editor, Senior Features Editor, and Editor-in-Chief.