American Museum of Natural History John Wiley & Sons and the American Museum of Natural History have collaborated to develop a Web site linking this text to the Museum's permanent exhibition, the Gottesman Hall of Planet Earth, Rose Center for Earth and Space. The Web site features animations, images and other features from the Museum's extensive collection and Web site. This site will be updated and evolve to include new content. All links are keyed to the text of The Dynamic Earth, 4th Edition. Visit the Web site at www. Wiley.com/college/skinner.