Editorial: advances in pollutant transport in critical zone environmentsEditorial: advances in pollutant transport in critical zone environments Εισαγωγή Επιμελητή Editorial 2023-04-202021enOne major environmental challenge facing humankind is the constantly increasing pollution of water and soil resources on a global scale. The substances that cause such pollution arise primarily from human-made wastes, including agricultural and industrial wastes, household garbage, oil spills, and other toxic materials. The spatiotemporal distribution of these polluting substances in soil and water systems is determined by an interplay of many factors such as physicochemical properties of pollutants, soil grain properties and structure, fluid flow chemistry and velocity, biological activity, and other environmental factors (temperature, precipitation). In this issue, we have collected a series of articles that advance our fundamental understanding of the transport of solute and colloidal pollutants, their spread in Critical Zone environments, and recent monitoring and control efforts. These articles address the issue from various perspectives, spanning pore-scale, continuum-scale, and field studies in saturated groundwater and vadose zones.http://creativecommons.org/licenses/by/4.0/Frontiers in Water3Ma_et_al_Front. Water_3_2021.pdfChania [Greece]Library of TUC2023-04-20application/pdf99.5 kBfree Ma Huilian Li Yusong Shen Chongyang Chrysikopoulos Constantinos Χρυσικοπουλος Κωνσταντινος Kim Hyunjung Frontiers Media Contaminant transport Riverbank filtration Particle shape Granular media Vadose zone monitoring Groundwater pollution