Public speaker and writer on Degrowth, Energy Transition and threats to industrial civilization. Author of Las verdades incómodas de la Transición Energética (2024), La izquierda ante el colapso de la civilización industrial (2016 [2015]), We, the detritivores (2018 [2014]) and editor of Guía para el descenso energético (2019 [2013]). Founder and editor-in-chief of multilingual 15/15\15 magazine for a new civilization (2015-), and coordinator of the weekly radio program Vivirmos nun mundo finito (2017-). https://casdeiro.info