The Magdalena River, linking Colombia's Andean interior and Caribbean coast, has long served as a conduit for the expansion of colonial and racial capitalism in the Americas. Now a state-backed megaproject seeks to transform the waterway into a logistics corridor. In Artery, Austin Zeiderman relates the Magdalena's fraught past and uncertain future to global entanglements of race, nature, and capital. Refusing disciplinary parochialism, Zeiderman...