The current issue of post(s), proposed by Astrid M. Fellner and Hugo Burgos, highlights the new border epistemologies. Desbordes / Undoing Borders focuses on innovative ways to undo the border. This issue offers a space for exploratory research on new and creative approaches to the borders, border areas, knowledge produced from the borders, and their destruction or incomprehension. It focuses on aesthetic issues of the borders, by approaching the interactions between the material and immaterial manifestations that occur within them, and the possible media (visual, literary, sound"¦) available to study them.