Cross-border railway lines France-Germany in 2022 - Data sources: SNCF Grand Est, DB, Ministerium für Umwelt Saarland. Harmonization: SIG-GR / GIS-GR 2022

Cross-border bus lines Luxembourg-Saarland in 2022 - Data sources: Ministère de la Mobilité et des Travaux publics (LU), Zweckverband Personennahverkehr Saarland (ZPS). Harmonization: SIG-GR / GIS-GR 2022

Presence of the Southern damselfly (Coenagrion mercuriale) - Illustration as grid cells 10x10km - Data sources: MNHN Luxemburg, MNHN France, Ministerium für Umwelt und Verbraucherschutz Saarland, Landesamt für Umwelt (LfU) Rheinland-Pfalz, SPW/ARNE/DEMNA, Natagora and collaborators

Cross-border bus lines Luxembourg-Rhineland-Palatinate in 2022 - Data sources: Ministère de la Mobilité et des Travaux publics (LU), Verkehrsverbund Region Trier. Harmonization: SIG-GR / GIS-GR 2022

Cross-border bus lines Rhineland-Palatinate - East Belgium in 2022 - Data sources: Verkehrsverbund Region Trier. Harmonization: SIG-GR / GIS-GR 2022

Cross-border bus lines Luxembourg-Wallonie in 2022 - Data sources: Ministère de la Mobilité et des Travaux publics (LU), Opérateur de Transport de Wallonie – OTW. Harmonization: SIG-GR / GIS-GR 2022

Cross-border study programmes in social sciences, business and law 2023 - Number of study programmes per university - Source: UniGR

Cross-border railway lines Luxembourg-France in 2022 - Data sources: SNCF Grand Est, CFL. Harmonization: SIG-GR / GIS-GR 2022

Cross-border railway lines Luxembourg-Belgium in 2022 - Data sources: SNCB, CFL. Harmonization: SIG-GR / GIS-GR 2022

Cross-border study programmes in Humanities and Arts 2023 - Number of study programmes per university - Source: UniGR