This paper focuses on how the practitioners of the exact and natural sciences can make a contribution to the project of the social sciences to break free of a reductive Eurocentrism in order to achieve a renewed universalism. Focusing in particular on the last 50 years, the paper: a) describes the 1955–60 turning point that can be perceived in techno-scientific development and its relationship with society; b) analyzes technical developments under the two modes of gigantism and miniaturization, putting them in close relation with the political evolution of the world (Cold War and post-Cold War era) as well as with the phenomena of divergence/convergence among disciplines; c) explains the ‘ethical movement in science' namely by introducing the idea of moral revaluation defined by similarity/contrast with the older and now well-accepted concept of scientific revolution; and d) sketches a typology of the scientific community's varied responses to the growing social protests around topics such as nuclear installations, health crises, genetically modified organisms, nanotechnologies and so on.