Professor Majid Hassanizadeh has accumulated 40 years of experience in the theoretical, experimental, and computational studies of flow and transport in porous media. After earning his PhD from Princeton University in 1979, he joined Abadan Institute of Petroleum Technology, Iran, as an assistant professor. Since 1984, he lives in the Netherlands and he has worked at RIVM Institute, Delft University of Technology, and Utrecht University, where he is currently emeritus professor of hydrogeology. He has more than 300 publications on theories of flow and transport in porous media, pore-network modeling and experimental studies of two-phase flow (tube-scale, micro-model, and core experiments) including studies of low-salinity effect, pore-network modeling of adsorbing solutes in unsaturated soil, transport of colloids and micro-organisms in variably-saturated soil, and novel remediation methods for NAPL-polluted soils. He has been (associated) editor of major journals: Advances in Water Resources, Vadoze Zone Journal, Water Resources Research (2004-2009), and Transport in Porous Media. He is a co-founder and Managing Director of International Society for Porous Media (InterPore). He is elected Fellow of American Geophysical Union (2002) and American Association for Advancement of Science (2007). He was awarded honorary degree of Doctor-Ingenieur from Stuttgart University in 2008, received the von Humboldt prize in 2010 and Don and Betty Kirkham Soil Physics Award in 2011, was selected as 2012 Darcy Lecturer by the US National Groundwater Association. He received the Royal Medal of Honor, Knight in the Order of the Netherlands Lion, in 2015, and Robert Horton Medal of Amerian Geophysical Union in 2019. For more information, see https://www.uu.nl/staff/smhassanizadeh.