Jack Horner

New evidence has paleontologists questioning whether a third of all dinosaur species ever existed. Could some discoveries once thought to be distinct species, in fact, be the same species at different stages of development? National Geographic joins famed paleontologists—including Jack Horner, a contributing expert to the Jurassic Park films—who are challenging the long held belief that young dinosaurs looked like miniature versions of their parents.

Scientists discuss the possibility of reverse-engineering the DNA of modern birds to recreate dinosaur species, instead of cloning fragments of dinosaur DNA extracted from amber and other ancient fossils.

Behind-the-scenes documentary about the making of director Steven Spielberg's 1997 film "The Lost World."

This documentary treats film fans to a behind-the-scenes look at the making of Jurassic Park, one of the 90's biggest hits and a milestone in special effects development. Narrated by James Earl Jones, it includes footage of the filming process, as well as interviews with director Steven Spielberg, and other members of the cast and crew, who give their insights into what it was like working together on this project and the efforts it took to bring the film to completion.