Considered one of the most effective sources of informal science education, hands-on science centers are one of America's newest and most popular types of museums. This book describes the history and nature of the science center movement in the United States and contains descriptions of more than 260 museums and sites where the visiting public can touch, handle, and interact with exhibits or objects in both an entertaining and educational way. Each entry includes a brief description of the center's hands-on exhibits, programs, and events, along with contact information, hours, and ticket information. The book also includes 75 pictures of the museums and exhibits in action.