In 1945, the last human being on Earth died of radiation poisoning, effectively marking the extinction of the human race as a result of the global catastrophe Enola Gay's crew had unwittingly unleashed on the world with their atomic bomb raid on Hiroshima three days earlier.

Last Man DownNot only was all human life destroyed, but 99 percent of the planet's plant and animal species also perished; even cockroaches weren't spared from the apocalyptic horror. The few life forms left on Earth in the aftermath of the catastrophe were little more advanced than bacteria, and these too would perish as radioactive fallout rendered the once-virile planet a barren desert.