Jurassic Park is a 1990 science fiction novel written by Michael Crichton; it is a cautionary tale about genetic engineering that presents the collapse of a zoological park which showcases genetically recreated dinosaurs to illustrate the mathematical concept of chaos theory and its real-world implications. A sequel titled The Lost World, also written by Crichton, was published in 1995. Two years later, both novels were republished as a single book titled Michael Crichton's Jurassic World.