Cartographer and historian William Rankin argues that it's time to reimagine what a map can be and how it can be used. Maps are not neutral visualizations of facts. They are innately political, defining how the world is divided, what becomes visible and what stays hidden, and whose voices are heard. What matters isn't just the topics or the data, but how maps make arguments about how the world works. And the consequences are enormous. A map's visual argument can change how cities are designed and how rivers flow, how wars are fought and how land claims are settled, how children learn about race and how colonialism becomes a habit of mind. Maps don't just show us information—they help construct our world. Brimming with vibrant maps, including many "radical" maps created by Rankin himself and by other cutting—edge mapmakers, Radical Cartography exposes the consequences of how maps represent boundaries, layers, people, projections, color, scale, and time. Challenging the map as a tool of the status quo, Rankin empowers listeners to embrace three unexpected values for the future of cartography: uncertainty, multiplicity, and subjectivity. Changing the tools—changing the maps—can change the questions we ask, the answers we accept, and the world we build.