Lucifer's Hammer
Larry Niven
 The story details a cometary impact on Earth, an end to civilization, and the battle for the future. It encompasses the discovery of the comet, the LA social scene, and a cast of diverse characters whom fate seems to smile upon and allow to survive the massive cataclysm and the resulting tsunamis, plagues, famines and battles amongst scavengers and cannibals. When wealthy soap company heir and amateur astronomer Tim Hamner co-discovers a new comet, dubbed Hamner-Brown, documentary producer Harvey Randall persuades Hamner to have his family's company sponsor a television documentary series on the subject. Political lobbying by California Senator Arthur Jellison eventually gets a joint Apollo-Soyuz (docking with the second flightworthy Skylab) mission into space to study the comet, dubbed "The Hammer" by popular media, which is expected to pass close to the Earth. Despite assurances by the scientific community that a collision with Earth is extremely unlikely, the public, fueled with religious fervor by the evangelist Henry Armitage, begins to hoard food and supplies in anticipation. Eventually, to the shock of scientists at JPL in Pasadena who could not track the trajectory accurately enough due to the comet's constant outgassing, the Hammer does fall, breaking up into several smaller comets that impact around the world with devastating results, striking parts of Europe, Africa, the Gulf of Mexico, and both the Pacific and Atlantic. The strikes trigger several volcanoes and earthquakes around the world, including the San Andreas fault, heavily damaging the Southern California region and the rest of California, causing millions of casualties. Several of the fragments land in the ocean, causing further damage by the resulting tsunamis (which destroy several major coastal cities around the world, including Los Angeles, killing millions) and long-term climate problems due to the massive quantities of vaporized seawater. Immediately following the Hammer's impact, anticipating the coming ice age and the inevitable southward migration of Russian survivors into Chinese territory, China launches a preemptive nuclear attack on major Russian cities. The Russians are able to respond in time and, with American assistance, China is effectively destroyed, though not without devastating losses for Russia. Within hours of the comet strike hundreds of millions are dead and much of the world is left in ruin. As the survivors contend with weeks of non-stop rain, flooding destroys practically every dam and levee, leaving the search for food a top survival priority. Civilization crumbles as people use the few remaining weapons to protect themselves from each other. Surviving "Hammerfall" is shown to be primarily a matter of random chance, with preparation being a distant second factor. Hamner goes from being a dilettante astronomer to a determined survivor, with his new wife Eileen. Randall shows true leadership abilities under fire, while Jellison and other land owners, farmers and ranchers become lords over their fiefdoms and the serfs they employ to provide labor, skills and security. Jellison forms the centerpost of these fiefs, dubbed "the Stronghold", where he presides over a small population of survivors who wish to retain civilization. The tone of life after "Hammerfall" is one where those who do not have valuable professions for a world without power or civilization are relegated to being manual laborers, regardless of their socioeconomic status or profession before the Fall. While doctors and farmers are still valuable, lawyers are unnecessary—but if civilization is to be rebuilt, scientific knowledge is the most valuable skill of all. Soldiers and police are diminished and provide security alongside gang members and bikers, both within the Stronghold and within the New Brotherhood Army, the legions of Reverend Henry Armitage, who indoctrinates his followers into cannibalism to shame them into loyalty. Jellison's stronghold is located slightly east or northeast of Springville, California, where the North Fork and the Middle Fork of the Tule River meet. West of this stronghold, the city of Porterville has been destroyed by the collapse of the dam at Lake Success. Massive and sustained rainfall has turned the former San Joaquin Valley into a swampy lake. Other small enclaves of civilization exist in this area, until a band of cannibalistic zealots led by Reverend Armitage and an army of heavily armed soldiers begin a rampage through the area, culminating in a series of battles with the inhabitants of Jellison's stronghold.