This sweeping work traces the idea of race for more than three centuries to show that ''race'' is not a product of science but a cultural invention that has been used variously and opportunistically since the eighteenth century. Updated throughout, the fourth edition of this renowned text includes a compelling new chapter on the health impacts of the racial worldview, as well as a thoroughly rewritten chapter that explores the election of Barack Obama and its implications for the meaning of race in America and the future of our racial ideology.