Doug Cook is retired from a thirty-four year career as a petroleum geophysicist. He is now dedicated to writing, astronomy, and climate change awareness. Doug participated in ten years of deep-water submersible studies on chemosynthetic communities of life in the Gulf of Mexico . These extremophile organisms relate to Doug’s passion for astrogeology and exobiology. He is a member American Association of Petroleum Geologists (AAPG), Chair AAPG Astrogeology Committee, Society of Exploration Geophysicists (SEG), Vice President Colorado Springs Astronomical Society, member of the Planetary Society, National Space Society, Explore Mars, and Adjunct Astronomy Professor PPCC. He has two daughters and lives in Colorado with his wife Elizabeth.