Book excerpt: In Bring Back the Buffalo!, Ernest Callenbach argues that the return of the bison is the key to a sustainable future for the Great Plains. Vast stretches of the region have seen a steady decline in population and are ill-suited for traditional agriculture or cattle ranching. Yet those same areas provide ideal habitat for bison. Callenbach explores the past history, present situation, and future potential of bison in North America as he examines what can and should be done to re-establish bison as a significant presence in the American landscape. He looks forward with high hopes to a time when vast herds of buffalo provide permanent sustenance to the rural inhabitants of the Great Plains and again play a central role in the balance of nature.