The Nature of Difference documents how distinctions between people have been generated in and by the life sciences. Through insightful commentaries and a wide-ranging selection of primary documents by the editors, it charts the shifting boundaries of science and race through more than two centuries of American history. The documents, primarily writings by authoritative, eminent scientists intended for their professional peers, show how various sciences of race have changed their object of study over time: from racial groups to types to populations to genomes and beyond. The book's...