Evolution

Wayne Grey (Seann William Scott), a trainee firefighter practicing in a shack in the desert near Glen Canyon, Arizona, sees a meteor strike his car and land in an underground cavern.

College professor Ira Kane (David Duchovny) and his colleague, geology Professor Harry Block (Orlando Jones), investigate, taking a sample of strange blue liquid that oozes from it. Ira discovers that it harbors extraterrestrial single-celled nitrogen-based organisms multiplying exponentially, condensing millions of years of evolution within a matter of hours. The next day, they take the science class to survey the meteor site and find it already surrounded by evolved oxygen-converting fungi and alien flatworms. Ira and Harry discover that the cells and organisms reproduce rapidly through mitosis after seeing one of the flatworms they collected in a jar split into two.