In this episode, which is a re-broadcast of an episode from Season 1, we speak with Steven Bernstein, Distinguished Professor of Global Environmental and Sustainability Governance, University of Toronto, and Matthew Hoffmann, Professor of Political Science, University of Toronto, about carbon lock-in (the ways in which our culture currently reinforces our use of fossil fuels) and two different metaphors for thinking about how we might challenge the carbon lock-in mindset both locally and internationally.