(mostly) canon: http://www.somethingawful.com/news/internet-prophet-posts/
Their worlds had all eaten itself, turning into a planet with new structure. All oil had burned in an eternal fire on the Earth. It would never extinguish, now that over 10 billion human beings and even more of the lesser mammals would provide constant fuel for the flame. No one but those on the planet could ever hear the screams of pain and terror. Flesh would fall off and regrow and the maggots would devour the rot. There was no longer rule and only chaos propelled by the pain that all felt equally. People would disintegrate under the unstable atmosphere. The eyes on what would be a man’s face would melt and drip down into their mouth, across their gums. The screams created a sound of silence. Cackles and pops would occasionally permeate the environment of sound. There was nothing to contrast. The next generation of people on this Earth would not have education or food or happiness and only feel the constant burn that defined the borders between the living and the dead.