In the roadless Brooks Range Mountains of northern Alaska sits Anaktuvuk Pass, a small, tightly knit Nunamiut Eskimo village. Formerly nomadic hunters of caribou, the Nunamiut of Anaktuvuk now find their destiny tied to that of Alaska's oil-rich North Slope, their lives suddenly subject to a century's worth of innovations, from electricity and bush planes to snow machines and the Internet. Anthropologist Margaret B. Blackman has been doing summer...