Should a river have legal rights of its own? Should it be able to thrive, and even evolve naturally, without human interference? Those are the deep questions asked in a precedent-setting federal lawsuit filed in September in which the Colorado River, as an ecosystem, seeks federal legal rights to exist and to flourish. It is the first action of its kind in the United States. The plaintiff in the case is the Colorado River itself, with the organization Deep Green Resistance acting as a “next friend” on its behalf.