Into a Site for Public Participation in Silent

This article examines Rachel Carson’s assimilation and revision of scientific uncertainty in her sources, annotations, and drafts for Silent Spring. It argues that Carson’s emphasis on the special topos of uncertainty was not an original invention but instead was Carson’s contribution to an ongoing scientific and political conversation about uncertainty in 1962. Carson transformed this topos into a bridge across the is–ought divide in science-related policy making, using the uncertainty topos to invite th