What is cosmopolitiques? Not merely the title of a new French journal, conceived by philosopher Isabelle Stengers and sociologist of science Bruno Latour, but the name given to political systems that also embrace the nonhuman, according a place to trees, whales, genes, seas, mountains—even to the Gulf Stream, currently threatened by global warming. “With what other beings do we want to continue to exist? With what sort of world?”—such are the basic questions raised by this new ecology, which rejects an essentially rationalistic and totalizing concept of nature. Without reducing his