Editorial for the special issue on: transitions in society, energy, ecology, materials and other areasJean-Pierre Birat, Gaël Fick, Mauro Chiappini, Dominique Millet, Thècle Alix, Andrea Declich, Leiv Kolbeinsen et Valentina CollaMatériaux & Techniques, 108 5-6 (2020) 501DOI: https://doi.org/10.1051/mattech/2021009
