Life After People is a television series on which scientists, structural engineers, and other experts speculate about what might become of Earth should humanity instantly disappear. The featured experts also talk about the impact of human absence on the environment and the vestiges of civilization thus left behind. The series was preceded by a two-hour special that aired on January 21, 2008 on the History Channel which served as a de facto pilot for the series that premiered April 21, 2009