Book excerpt: From its discovery in the Columbia River three years ago, reporter Roger Downey has chronicled the epic adventures of the skeleton called "Kennewick Man": first as a pretext for a media feeding-frenzy, then as the centerpiece of a legal circus pitting celebrated scientists against Native Americans, the Corps of Engineers, and the Clinton White House, finally, at long last, as an object of rational scientific study. The saga of Kennewick Man offers abundant opportunity to explore today's rapidly-changing scientific theories about how the Americas first came to be settled, and by whom. But it also casts much light on the deep divisions within the fields of anthropology and archeology concerning the role of politics and race in the pursuit of scientific goals, what constitutes ethical procedure in dealing with ancient human remains and living individuals, and the very purpose and direction of the scientific enterprise itself. With an easy style that keeps you hooked from beginning to end, Downey describes the major players in this continuing debate and details the controversial scientific, religious, and political arguments surrounding Kennewick Man.