History ApocalypseHow / Class3B

** There are, of course, several examples in ''DoctorWho'' of ''nonhuman'' sentient races that have gone extinct by natural means.

Planetary-scale Extinction of the dominant Species on the planet, via ''natural'' causes.

* While ''LifeAfterPeople'' deliberately avoids stating how the Earth's population vanishes, the lack of corpses and the pristine condition of human structures at each episode's beginning implies that it wasn't our own doing: any Class 3a extinction achievable with present-day methods would've been a lot messier.

* In the 2000 two part episode of ''TheOuterLimits'' "Final Appeal" it's revealed that all episodes are alternate timelines and futures and that while many of them actually are tied together into semi coherence. the episode ends with a time traveler with a grudge detonating a fusion bomb taking out most of the eastern seaboard, rendering their arguing about this timeline's rejection of tech stronger than a light bulb pretty much moot.

* [[Creator/HPLovecraft Cthulhu]] will do this [[CosmicHorrorStory when the stars are right]]. {{Eldritch Abomination}}s running rampant usually falls somewhere between here and class 5.

* Dougal Dixon's ''ManAfterMan'' {{Handwave}}s the natural extinction of ''Homo sapiens'', describing species which exist on Earth 50 million years later.

* In one ''{{Babylon 5}}'' episode, the entire Markab race is wiped out by a deadly virus confined to their species, spread from their homeworld to all their colonies. This was due to their belief that the disease only befell those who acted dishonourably, and thus all of them refused to believe they had it - making any quarantine meaningless.

* [[HPLovecraft Cthulhu]] will do this [[CosmicHorrorStory when the stars are right]]. {{Eldritch Abomination}}s running rampant usually falls somewhere between here and class 5.

[[AC:{{Anime and Manga}}]]

* In {{The Lord of the Rings}} - for everything ''except'' humans (Ent, Hobbits, Orcs etc).

* Subverted by ''Series/{{Doctor Who}}'' (and the '''only''' category on this page that the show doesn't really fall into): the human race is explicitly stated, on several occasions (most recently "Utopia") to outlive the universe.

* Despite the violence of the setting, some planets that die in ''{{Warhammer 40000}}'' do so in relatively natural ways, such as being consumed by warp storms and more mundane types such as massive famine from climate change and random asteroids.

[[AC: {{Video Games}}]]

[[AC:{{Web Original}}]]

[[AC:{{Real Life}}]]

* Dougal Dixon's ''After Man'' {{Handwave}}s the natural extinction of ''Homo sapiens'', describing species which exist on Earth 50 million years later.

* The backstory of Deep Water Black is that the entire human population is wiped out by a deadly virus. The only thing they could do about was to send out a ship to be pioted by clones and stocked with DNA of a large amount of people to leave Earth and apparently come back when the virus is all gone.

* Extrapolating current demographic trends, humans might do this due to falling birth rates everywhere. Mind you it would take several centuries even at low rates, and demographics tend to not be reliably extrapolatable.

* The ''CombatOfGiants: Mutant Insects'' games has a meteor that annihilated humanity and civilization. The game itself took place 300 years later where giant mutated insects rule the world.

* ''{{AI}}'' has every human die in an ice age; the "survivors" are either human-made robots who evolved into a new lifeform or aliens from another planet doing an archeological dig.

* In the 2000 two part episode of ''TheOuterLimits'' "Final Appeal" it's revealed that all epsiodes are alternate timelines and futures and that while many of them actually are tied together into semi coherance. the episode ends with a time traveler with a grudge detonating a fusion bomb taking out most of the easter seaboard into the tip of padach from florida to canada rendering their arguing about this timeline's rejection of tech stronger than a light bulb pretty much moot.

* In The Lord of the Rings - for everything ''except'' humans (Ent, Hobbits, Orcs etc).

* Subverted by ''{{Doctor Who}}'' (and the '''only''' category on this page that the show doesn't really fall into): the human race is explicitly stated, on several occasions (most recently "Utopia") to outlive the universe.

* Extrapolating current demographic trends, humans might do this due to falling birth rates everywhere. Mind you it would take several centuries even at low rates, and demographics tend to not be reliably extrapolatable.
* The Voluntary Human Extinction Movement.

* Extrapolating current demographic trends, humans might do this due to falling birth rates everywhere. Mind you it would take several centuries even at low rates, and demographics tend to not be reliably extrapolatable.