Fritz Foss and Nathaniel Putzig - co-authors of January's The Leading Edge cover article - discuss "3D imaging of Mars’ polar ice caps using orbital radar data." Fritz Foss has worked in various capacities in the oil & gas exploration business for the past 23 years. He co-founded Unified GeoSystems in 2009. Nathaniel Putzig is a Senior Scientist at the Planetary Science Institute. He's worked 14 years with terrestrial active-source seismic data in academia and industry. Presently, he serves as the US/Deputy Team Leader for the Shallow Radar sounder on the Mars Reconnaissance Orbiter. Please subscribe to Seismic Soundoff on iTunes or wherever you listen to podcasts. If you enjoy the show, review us on iTunes – your review helps others find the show. Full show notes at seg.org/podcast.