5. Dino DNA (Jurassic Park)
Steven Spielberg's film Jurassic Park, based on the famous novel by Michael Crichton, follows an eccentric researcher as he re-creates the lives of dinosaurs which have been extinct for millennia. It is a wonderful and exciting film, filled with moments of excitement and suspense nearly unparalleled in the history of movies. Now, I am no geneticist. I have no idea if there are actual breeds of amphibians which spontaneously change sex in a single-sex environment. I also don't know if these genes are spliced into extinct creatures whether or not they will take on these adaptive attributes. But what I do know is that the macromolecule DNA has a finite half-life. Unlike the mosquito in amber, DNA will degrade over time. Dr. Hammond would be a few million years shy of being able to replicate any dinosaurs. And even if the right wing fundamentalists are correct, there would not be enough DNA strands left over to re-create a dinosaur which had only been dead for 6,000 years, no matter how much enjoyment Moses and Noah got from riding around on a Stegosaurus.