As an environmental historian, she specializes in the lands and seas of the Russian and North American Arctic. Both countries are represented in her current book project, tentatively titled Beringian Dreams: People, Nature, and the Quest for Arctic Energy 1848-1988, under contract with W.W. Norton. Based on years of research in Siberia and Alaska, the work examines how the common extremity of the arctic environment at the Bering Strait shaped the twentieth century’s two great economic systems, capitalism and communism. Demuth is also the assistant director of the Climate History Network and Historicalclimatology.com. She has a B.A. and M.A. from Brown University, and an M.A. and PhD in History from the University of California, Berkeley.