Resumen: Multilayer networks have in recent years emerged as an important new paradigm of network science. Groundbreaking research has shown that processes that unfold on different but interdependent network layers can not be simply reduced to a conglomerate of additive processes on a single network. On the contrary, small and seemingly unimportant changes in one network layer can have far-reaching and indeed catastrophic consequences in other network layers. Such cascades of failures can lead to concurrent malfunctions in electrical power grids, they can gridlock traffic, and accelerate epidemics, to name just some examples. In the light of this functional relevance, network science has had to redefine structural measures, rethink growth processes, and come up with new mathematical formulations for multilayer networks. The field is still very much alight and vibrant, and with the focus on multilayer networks, the New Journal of Physics has given due space to the forefront research along these lines. Idioma: Inglés DOI: 10.1088/1367-2630/ab4fcb Año: 2020 Publicado en: New Journal of Physics 22, 1 (2020), 010201 1-3 ISSN: 1367-2630 Factor impacto JCR: 3.729 (2020) Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 22 / 85 = 0.259 (2020) - Q2 - T1 Factor impacto SCIMAGO: 1.584 - Physics and Astronomy (miscellaneous) (Q1)