The abstract paintings of Jackson Pollock, Willem de Kooning, Barnett Newman, Lee Krasner, Clyfford Still, Helen Frankenthaler and others revolutionized the art world in the 1940s and 1950s. What were these artists trying to achieve? Who were the critical voices of the time that rallied public interest in Abstract Expressionism and sparked rancorous debate? Drawing on critical, historical and biographical work, this illustrated book offers a sharp focus on a pivotal art movement. It also presents an extensive commentary on two influential critics of postwar American art - Clement Greenberg and Harold Rosenberg - whose powerful views shaped perceptions of Abstract Expressionism and other contemporary art movements.