Winner, Grand Prize, French Voices Award for Excellence in Publication and Translation The Space Age is over? Not at all A new planet has appeared: Earth. In the age of the Anthropocene, the Earth is a post-natural planet that can be remade at will, controlled and managed thanks to the prowess of geoengineering. This new imaginary is also accompanied by a new kind of power--geopower--that takes the entire Earth, in its social, biological and geophysical dimensions, as an object of knowledge, intervention, and governmentality. In short, our rising awareness that we have destroyed our planet has simultaneously provided us not with remorse or resolve but with a new fantasy: that the Anthropocene delivers an opportunity to remake our terrestrial environment thanks to the power of technology. Such is the position we find ourselves in, when proposals for reengineering the earth's ecosystems and geosystems are taken as the only politically feasible answer to ecological catastrophe. Yet far from being merely the fruit of geo-capitalism, this new grand narrative of geopower has also been activated by theorists of the constructivist turn--ecomodernist, postenvironmentalist, accelerationist--who have likewise called into question the great divide between nature and culture. With the collapse of this divide, a cyborg, hybrid, flexible nature has been built, an impoverished nature that does not exist without being performed by technologies that proliferate within the space of human needs and capitalist imperatives. Underneath this performative vision resides a hidden anaturalism denying all otherness to nature and the Earth, no longer by externalizing it as a thing to be dominated, but by radically internalizing it as something to be digested. Constructivist ecology thus finds itself in no position to confront the geoconstructivist project, with its claim that there is no nature and its aim to replace Earth with Earth 2.0. Against both positions, Neyrat stakes out the importance of the unconstructable Earth. Against the fusional myth of technology over nature, but without returning to the division between nature and culture, he proposes an "ecology of separation" that acknowledges the wild, subtractive capacity of nature. Against the capitalist, technocratic delusion of earth as a constructible object, but equally against an organicism marked by unacknowledged traces of racism and sexism, Neyrat shows what it means to appreciate Earth as an unsubstitutable becomin