This online exhibit developed by the Illinois State Museum provides information about the most recent glaciation over a large part of the Earth. To gain an understanding of ice ages, students will find answers to the questions: What are Ice Ages?, When did Ice Ages Occur?, and Why do Ice Ages Occur?. The Web site's section on the Midwest U.S. 16,000 Years Ago Exhibit features amazing images, animations, and descriptions of the glacier movements, soil deposits, environments, and other landscape features. Visitors will also find extensive information about the plants and animals of the Pleistocene. This site is also reviewed in the November 14, 2003 NSDL Physical Sciences Report.