Andrew Glikson graduated at the University of Western Australia in 1968. He spent 32 years mapping geological terrains in central and western Australia with the Australian Geological Survey organization, studied the geochemistry and the early history of the Earth in several continents, and investigated the consequences of volcanic and asteroid impact episodes, including for the composition sediments, the hydrosphere and atmosphere. Dr Glikson has published over 150 papers and reports. He was honored by the Late Eugene Shoemaker, Head of the U.S. Geological Survey Astrogeology Branch, who named an asteroid and an impact structure as “Glikson”. At present he is at the Australian National University focusing on major upheavals in the history of Earth, including effects on climate.