The focus of this special issue of Cuadernos de Investigación Geográfica is on polar environments and includes nine papers describing new advances and studies concerning physical geography. This issue deals with periglacial environments, permafrost, glaciers and snow and includes papers on the Arctic (French; Andrés et al.; Navarro et al.; Martín Moreno and Allende; López-Moreno et al.), and the Antarctic (Balks and O’Neill; Hrbáček et al.; López-Martínez et al.; de Pablo et al.). All areas studied are of interest, and some of them have now been studied for 46 years. In all cases the authors have great experience of working in the field. The presence of Spanish research and exploration teams in the issue underlines the interest, application and continuity of research on polar regions by Spanish groups over the last 30 years. [Texto extraído del artículo de Enrique Serrano Cañadas].
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