Clay is one of the oldest materials known to humanity and has been used for utilitarian purposes and creative expression since prehistoric times. As civilizations evolved, ceramic materials, techniques, purposes and design all became more sophisticated and expressive. With the addition of different minerals and firing methods, clay was used to produce earthenware, stoneware and porcelain, allowing for even greater uses and versatility. "Innovation and Change: Great Ceramics from the Ceramics Research Center, Arizona State University Art Museum Collection" highlights 79 masterworks by many of the leading international artists of the time, offering a panoramic survey of the potential of clay as an expressive art form. The objects on view range from functional ware for everyday use to more expressive sculptural forms. The exhibition provides an in-depth survey of American studio ceramics since the 1950s. There are also several examples of major European and Asian ceramic artists who were major influences to generations of American potters. The exhibition features works by such prominent artists as Robert Arneson, Rudy Autio, Hans Coper, Rick Dillingham, Ken Ferguson, Shoji Hamada, Karen Karnes, Maria Martinez, Lucie Rie, Akio Takamori, Peter Voulkos and Betty Woodman.