James R ZimbelmanJames R. Zimbelman is Senior Geologist Emeritus at the Center for Earth and Planetary Studies in the National Air and Space Museum at the Smithsonian Institution, where he studies planetary geology including the geologic analysis of remote sensing daa of Mars, geologic mapping of Mars and Venus, the study of long lava flows on the terrestrial planets, and field studies of volcanic, aeolian and pluvial features. In 2013 he received the Ronald Greeley Award for Distinguished Service, and in 2020 the G. K. Gilbert Award, both from the Planetary Geology Division (PGD) of the Geological Society of America (GSA). He is a Fellow of GSA, has served as Secretary of the American Geophysical Union's Planetary Sciences section, an officer in PGD, and chair of the NASM Center for Earth and Planetary Studies. Read More Read Less