Earth, also referred to as “The Ground”, is the original home of humanity. The planet had been affected by radiation for 97 years after a devastating nuclear apocalypse. After the Ark’s life support systems were found to be failing critically, the 100 were sent to the surface in a last ditch attempt to determine if Earth is habitable again. The 100 lived on the planet along with the Grounders, as well as the rest of the Sky People from the Ark. Recently, Earth has been destroyed by the Second Nuclear Apocalypse, known as “Praimfaya”. What used to be a lush green planet has now become a charred place left in ruins. Fortunately, Praimfaya only destroyed 96% of the Earth’s surface, and an area of the planet did manage to survive the apocalypse. This area is known as the Shallow Valley. On April 26, 2156, the last survivable land was destroyed by the “Damocles” bomb, launched by Paxton McCreary. The planet became completely uninhabitable. Over the course of a century, Earth has become a very different place in the wake of the Nuclear Apocalypse that left much of the world devastated and drove mankind to near extinction. Ecosystems have changed, landscapes have been reshaped, and life has adapted. As of now, the infrastructure that had existed throughout the land had been mostly destroyed. Any evidence of human civilization as we know it is almost non existent. Although survivable, the worlds natural flora and fauna are almost extinct. After the last survivable land was destroyed by the bomb, Earth became completely uninhabitable forever.