Abstract

This article raises issues of science, politics, economics and ethics. The first section presents the ontological transition from the first Copernican revolution to the second Copernican revolution in the global study of sustainability and the ethics of climate change. The second section describes the «Giddens’s paradox» and the Hilbertian program of the Earth System Science, that presuppose a paradigmatic challenge. Finally, the third section links this methodological challenge to the description of the «post-normal science» and the «transdisciplinarity chain» in a post-Kuhnian epistemology.