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 program does not speculate on how humanity may disappear, stipulating only that it has, and that it has done so suddenly, leaving everything behind including household pets and livestock that have to fend for themselves. The thought experiment is based on documented results of the sudden removal of humans from a geographical area and the results that have occurred when people discontinue the maintenance of buildings and urban infrastructure. Lurie's narration begins: "What would happen if every human on Earth disappeared? "This isn't the story of how we might vanish...it's the story of what will happen to the world we leave behind."
