This contribution outlines several modes of becoming-environmental that characterize the development thanks to which environmentality [Umweltlichkeit] has become our condition today: the becoming-environmental of media, of power, of subjectivity, of world, of capital and of thinking. The process of cybernetization initiated around 1900—and the process of computerization since 1950 in particular—culminating in the becoming-environmental of computation, is to be understood as a time of environmentalization, that forces us into the new power/knowledge complex of Environmentality [Environmentalität] and that obliges us, as a line of flight, to rethink environmentality as such beyond its restricted actual forms. Accordingly, the key challenge for a general ecology of media and technology is to advance the critique of Environmentalization by developing an analysis of its restricted forms, first of all of the environmentalitarian Capital-Form, and to break through toward a speculative thinking of the environment and a new environmental image of thought.