Culverts are all around us and you may not even know it. Culverts are pipes and tunnels, often under roadways and railroads, that allow water to pass through them. While water easily passes through them, the same can’t be said for some migratory fish like salmon. Ben Goldfarb is an environmental journalist who reported on the efforts being made to fix culverts for Hakai Magazine. He joins us to share more on the impacts the infrastructure can have and what it takes to replace them.