Salomon Kroonenberg (1947) is Professor of Geology, Delft University of Technology, the Netherlands (1996-emeritus since 2009), and at present Endowed Professor of Geology at the Anton de Kom University of Suriname. He is also a Honorary Professor at Moscow State University (2008-present) and Chairman of the Scientific Advisory Committee of the EU-ITN Horizon2020 programme Drivers of Pontocaspian Biodiversity Rise and Demise (2015-present). Earlier in his career he was Professor of Geology at Wageningen University, the Netherlands (1982-1996), Chairman Earth and Climate Council (RAK) of the Royal Netherlands Academy of Arts and Sciences KNAW (2000-2005) and Chairman of the Royal Netherlands Geological and Mining Society (KNGMG, 1991-1997). He obtained his PhD from the University of Amsterdam on the geological evolution of the Precambrian Guiana Shield, South America, and worked ten years as a geologist in Suriname, Swaziland and Colombia (1972-1982). Since 1991 he cooperates with Moscow State University, Faculty of Geography, to study mechanisms and consequences of rapid sea-level change in the Caspian Sea, with research grants from NWO (Dutch Science Foundation), INTAS, RFFI, EU, UNESCO-IGCP and industry. He has published over 160 scientific papers and 8 books, including Why hell stinks of sulfur, on mythology and geology of the underground, and Tipping Point on the Pontocaspian ITN programme. He received the Van Waterschoot van der Gracht Medal of KNGMG in 2011 for outstanding achievements in earth science, and the Eureka Award for his book De menselijke maat, de aarde over tienduizend jaar (The human Scale, the Earth ten thousand years from now). He is a member of the International Eurasian Academy of Sciences (2018) and a Foreign Member of the Russian Academy of Natural Sciences RAEN (1994). Website