The Dying Earth genre differs from the apocalyptic sub-genre in that it deals not with catastrophic destruction, but with entropic exhaustion of the Earth. The genre was prefigured by the works of the Romantic movement. Jean-Baptiste Cousin de Grainville's Le Dernier Homme (1805) narrates the tale of Omegarus, the Last Man on Earth. It is a bleak vision of the future when the Earth has become totally sterile. Lord Byron's poem "Darkness" (1816) shows Earth after the Sun has died.