The author examines how chronotopes--a term M. M. Bakhtin used to describe space-time relationships in literature--also characterize rhetorical arguments. She uses a case study of a series of debates about genetically modified foods (GMFs) in Canada to illustrate how chronotopes shape arguments along ideological lines. In particular, she suggests that dominant chronotopes, such as "space-time compression" or "substantial equivalence," are linked with powerful ideologies, such as neoliberal capitalism or scientific positivism, in ways that limit alternative arguments based on sustainability or green politics. (Contains 8 notes.)