In this week’s episode, both of our storytellers give us behind the scenes glimpses into why they do what they do.

Part 1: While constantly staring at Mercury’s craters for NASA's MESSENGER mission, a picture of the Galapagos Islands captures Paul Byrne’s attention.

Part 2: While serving in the navy to get his engineering degree, David Estrada is struck by the level of poverty he witnesses on the tiny island of East Timor.

Paul Byrne received his undergraduate and graduate degrees in geology from Trinity College Dublin, Ireland. He was a postdoctoral fellow at the Carnegie Institution for Science in Washington, DC on NASA's MESSENGER mission, the first spacecraft to orbit the planet Mercury. He later joined the Lunar and Planetary Institute in Houston, Texas, and then moved to North Carolina State University as an assistant and then associate professor. He became Associate Professor of Earth and Planetary Sciences at Washington University in St. Louis in 2021. His research focuses on comparative planetology—comparing and contrasting the surfaces and interiors of planetary bodies, including Earth, to understand planetary phenomena generally. His research projects span the Solar System from Mercury to Pluto and, increasingly, to the study of extrasolar planets. He uses remotely sensed data, numerical and physical models, and fieldwork on Earth to understand why planets look the way they do.

David Estrada is originally from Nampa, Idaho. From 1998 to 2004 he served in the United States Navy as an Electronics Warfare Technician/ Cryptologic Technician – Technical. David achieved the rank of Petty Officer First Class in 2003 before receiving an honorable discharge and returning to Idaho to pursue his undergraduate education at Boise State University (BSU) where he was a Ronald E. McNair scholar. After completing his Bachelor of Science in Electrical Engineering from BSU in May of 2007, he began graduate studies at the University of Illinois at Urbana-Champaign (UIUC) under the direction of Professor Eric Pop. David received his Master of Science in Electrical Engineering from UIUC in 2009, and his Doctor of Philosophy in Electrical Engineering at UIUC in 2013. David then joined Prof. Rashid Bashir’s Laboratory of Integrated Bio Medical Micro/Nanotechnology Applications as a Visiting Postdoctoral Researcher before moving to the Materials Science and Engineering Department at Boise State University. David is the recipient of the NSF and NDSEG Graduate Fellowships. His work has been recognized with several awards, including the Gregory Stillman, John Bardeen, and SHPE Innovator of the Year awards. His research interests are in the areas of emergent semiconductor nanomaterials and bionanotechnology.

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