Paper Title
Participatory Sciences and Researchers Responsibility: How to Deal with the Nanotechnological Risks Issues?

Abstract
In the controversies about nanotechnologies, NGOs have called for participation in science policy development. At the same time, many research institutions consider that researchers have a responsibility to address the risk issues. This communication shows that participation and responsibility come into tension with each other, given the demand for researchers' autonomy vis-à-vis political and economic decision-makers, but also civil society. Keywords- Nanotechnology, Risks, Research, Scientific Policy, Civil Society