Long before the start of the story, ecological disaster drove humanity undersea, or underground, or into space, [[EarthThatWas away from a ravaged Earth]]. After living for quite a while in a CityInABottle, it's a safe bet that someone will eventually find the way out and discover that the Earth has cleaned itself up nicely and now looks like the pristine GhibliHills, or why not, [[CaliforniaDoubling the Yosemite National Park]].

Often used to make the point that the Earth would be a so much better place [[HumansAreBastards if it weren't for all the people]], or more succinctly, that LuddWasRight. ([[UnfortunateImplications This might suggest]] that [[OmnicidalManiac massive genocide]] is [[UtopiaJustifiesTheMeans justifiable]].) If a group of survivors in space is smaller and not planning on a disaster, that's ButWhatAboutTheAstronauts.

Naturally, this is the perfect setting for an AdamAndEvePlot.

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!!Examples:

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[[folder: Anime and Manga ]]

* In ''LastExile'', [[spoiler:The show is set in an [[CityInABottle hourglass shaped space station]] (which is why the EyeCatch says "Last Exile In the Bottle"), and Last Exile is a transport ship to take anyone who wants back to Earth.]]
* In ''EurekaSeven'', [[spoiler:humans fled the earth and returned years later]]
* Twisted in ''TokyoMewMew''. The ancestors of the BigBad and his followers were originally from Earth, and fled into space after it seemed like they were about to die off. They ended up on a very harsh planet, and upon finally returning to Earth, it looks perfect in comparison. ''Then'' they notice that humans are taking this paradise for granted, littering and polluting. This starts their initial desire to KillAllHumans.
* The core MacGuffin of ''Manga/NausicaaOfTheValleyOfTheWind'', though it looks less like a national park and more like a surreal, magical realm.
** And there's the caveat that [[spoiler:since modern humans have adapted to their polluted AfterTheEnd environment, they literally wouldn't be able to survive there. Old humanity (the one that destroyed the environment to begin with) engineered the Sea of Corruption to purify the world, so that, once the process was complete, it would emerge from its cocoons and take over once more. This justifies Nausicaa's destruction of their Crypt, and her vague hope that her current mankind, instead of being replaced by its AbusivePrecursors, will adapt on its own just like it did before.]]
* Implied in ''PaleCocoon''. [[spoiler:Humans escaped to the Moon to avoid environmental destruction, but somehow lost their written history, and started to believe they were living underneath the destroyed Earth. In the end the protagonist as the first person to go to the upper layers of the colony in centuries sees a blue, pristine Earth up in the sky, implying that the planet was healed long ago, but no-one thought to look.]]
* ''Anime/TengenToppaGurrenLagann'': Played with
** Inverted because the trio escape to the surface only to find a dangerous land of beastmen causing trouble with their Ganmen. It has something to do with Lordgenome wiping all spiral life off the surface of the planet and repopulating it with less capable non-spiral lifeforms. Beastmen CAN'T evolve since they lack DNA which is also literally why they can't use Spiral Power. Except for [[spoiler:Viral, who becomes badass enough to [[BeyondTheImpossible use spiral power anyways]].]]
** Played straight for Kamina personally because a dangerous frontier is ''exactly'' the kind of world he wanted to live in.
* {{Megazone23}} Part 3 has one city in the whole world, [[LampshadeHanging unsurprisingly named]] Eden. Though after meeting [[spoiler: the computer AIs]] Eve and Adam in the first two parts, it's hardly surprising.

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[[folder: Comic Books ]]

* This is pretty much Ra's al-Ghul's ultimate goal in TheDCU, though needless to say, he's yet to succeed.
* When Durham Red [[HumanPopsicle emerged from stasis]] to start her own series in ''[[TwoThousandAD 2000 AD]]'', Earth was considered lost by the humans and mutants of the future. How did they lose it? Turns out that it was teleported to the far reaches of the galaxy to act as a prison for [[PhysicalGod the most powerful mutant ever]]. In the meantime, the world recovered and became a lush paradise. Predictably, it did not stay this way.

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[[folder:Fan Works]]

* In ''RolePlay/WeAreAllPokemonTrainers'', during the course of Team Earthbound, Nova, and other's adventures in PMD-B, a post-apocalyptic version of the Alternate Timeline, they find that many of the old cities have gotten a new coating of green. Azalea for instance was completely swallowed by Ilex Forest.

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[[folder: Film ]]

* Used at the end of TheFilmOfTheBook ''Film/LogansRun''.
* ''Film/FightClub'': Tyler Durden claims to have this as his dream.
* The end of [[spoiler: WesternAnimation/{{WALL-E}} is ''all over'' this trope. At least in the credits. When the movie was first shown to test audiences before Creator/{{Pixar}} made the "humanity restoring Earth" montage, about half the audience walked away with the rather realistic assumption that humanity died less than a week after they returned to Earth.]]
* In the film adaptation of ''Film/{{Hellboy}}'', this is [[EvilSorcerer Grigori]] [[WellIntentionedExtremist Rasputin's]] motivation for trying to release the [[SealedEvilInACan Ogdru]] [[EldritchAbomination Jahad]]. He's [[AxeCrazy deluded]] of course, seeing as an actual vision of their return reveals a fiery wasteland.
** This is actually more or less true in the comics. The Ogdru Jahad's ultimate goal is, more or less, to return Earth to the way it was in prehistoric times, before God selected humans to be His chosen people. While visions of the immediate aftermath of an Ogdru Jahad victory show grey, ruined, smoking wastelands full of ash and collapsed buildings, their long term plan is to cover the world in lush, mesozoic jungles populated by reptiles, amphibians and crustaceans.

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[[folder: Literature ]]

* [[http://en.wikipedia.org/wiki/The_Machine_Stops ''The Machine Stops'']] is a science fiction novella by E. M. Forster (HowardsEnd, ''Literature/APassageToIndia'') set in a dystopian future where humanity lives in cubicles, communicating only via technology and experiencing everything second-hand. Outside the planet is livable but the titular Machine has rendered humanity dependent on it. Written in 1909.
* ''Literature/EarthAbides'' [[http://en.wikipedia.org/wiki/Earth_Abides (1949)]] is possibly an Ur Example, although it is mixed in with a healthy amount of FridgeHorror as the single family that repopulates Northern California gradually loses the ability to count or write down anything since they are too busy learning how to live off the land with copper arrowheads made out of pennies.
* The ultimate destination for the main characters of Jeanne [=DuPrau=]'s ''TheCityOfEmber''.
* Believably used in Creator/BenElton's book ''This Other Eden'', in which humanity has designed self-contained hermetic domes so that they can survive an ecological disaster that everyone believes is coming any day now. At the end of the book, a false warning is issued, causing everybody to retreat into their domes. The sudden absence of humanity allows the Earth's ecosystem to recover from the damage caused by pollution.
* In D.J. [=MacHale=]'s ''[[Literature/ThePendragonAdventure The Pilgrims of Rayne]]'', Third Earth is like this - all the cities are underground and nature began to recover. Of course, this was after humanity had pretty much strip-mined the planet.
* In AndreNorton's short story and novella "Outside", humanity sealed itself into [[CityInABottle domed cities]] when the surface of Earth became too polluted to support life. An epidemic later wiped out the adults. At the beginning of the story, the Rhyming Man - who looks like an old man - has begun luring some of the smallest children away. The older brother of a missing girl learns that they have been taken outside, which has fully recovered in the absence of people.
* In ''Surreal 3000''/''Quatre Montréalais dans l'an 3000'' by Suzanne Martel, a society has existed for a long time under Montreal's Mount Royal. When a kid accidentally finds a way out, he discovers that there are people living outside, despite his society's belief that the outside is deadly (he wears a breathing mask when he gets out, so he would have remained clueless if not for that encounter).
* In the ''NovelsOfTheChange'', the total collapse of all modern technology means that things like bison and prairies make a hefty comeback, and wolves come back to the U.S. in force (also, lions and tigers. Blame soft-hearted zookeepers).
* In ''TheStand'' by Creator/StephenKing,[[note]]partially inspired by ''Earth Abides''[[/note]] the characters watch America being reclaimed by nature, which seems to bounce back nicely in the absence of humans, despite TheAntichrist lurking about ready to bring about the Apocalypse. In particular, TheProfessor Glen Bateman spends a large portion of time talking about how everything has changed, [[LuddWasRight possibly for the better]] without all those people. On the other hand, ThePlague killed almost all the domestic animals, too, and left the rats and such.
* In the Franchise/StarWarsExpandedUniverse, [[spoiler:the extremely violent Yuuzhan Vong race originated from Yuuzhan'tar, a living sentient planet. This homeworld (as well as most of the galaxy's inhabitable planets) was destroyed in a massive war between rival Yuuzhan Vong factions, after which they departed for a galaxy far far away to kill everyone and claim their worlds for themselves. Much later they encountered Zonama Sekot, the offspring of their original homeworld, a beautiful and peaceful place. When the Vong landed on its surface, their bioengineered living weapons returned to their natural state and refused to kill stuff anymore, revealing the violent ways of the Yuuzhan Vong to be a blasphemy of their true nature.]]
* A minor point in Creator/AndreyLivadny's ''TheHistoryOfTheGalaxy'' series. At the start of the setting, Earth is overpopulated and suffering from ecological catastrophes. As a result, the President of the Earth Alliance initiates a war with the Free Colonies in order to provide space to "offload" extra population. The war lasts for decades, resulting in massive casualties and constant emigration of Earthlings to newly-discovered worlds. After Earth is defeated, the newly-created Confederacy of Suns leaves it alone. When a character returns to Earth 1000 years later, lush forests and jungles cover it. There are barely any cities left, given that the entire population of Earth is now barely a few million. However, the oceans are not reborn (they dried up earlier) and are instead covered with plant growth. Not that anyone cares about Earth at this point. Humanity has moved on and only remembers Earth in the context of the war.

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[[folder: Live Action TV ]]

* Subverted in the new ''Series/{{Battlestar Galactica|Reimagined}}'', in which [[spoiler:they arrive at Earth only to find that it was thoroughly nuked two thousand years ago, and is ''still'' an uninhabitable wasteland]].
** Kobol arguably plays it straight. It is implied that the war that broke out on Kobol ~3,600 years ago, and may or may not have been nuclear as well. By the time the Colonials arrive, the planet is lush and teeming with life. However, traces of the catastrophe and ruins of major cities are still present. Oh. And it is also cursed.
* ''Series/DoctorWho'' serial "The Sontaran Experiment", only now Earth (or at least the greater London area) looks like the Devonshire moors.
* The ''Series/StargateSG1'' episode "The Gamekeeper" begins with this revelation, and the rest of the episode is dedicated (among other things) to SG-1's attempts to convince the locals [[LotusEaterMachine stuck in a virtual reality]] that the planet did indeed repair itself, even though said locals believe otherwise.
** And Dwight Schultz is hellbent on convincing them otherwise.

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[[folder: Tabletop Games ]]

* The shadow elves of ''{{Mystara}}'', a D&D game setting, retreated underground to escape the Great Rain of Fire. Hundreds of years later, when the planet had recovered, their scouts rediscovered a path to the surface ... and ran smack into a subversion: rather than a paradise, the tunnel led to the Broken Lands, one of the few places on the planet that ''still'' looked like a radioactive wasteland. They went back underground and stayed put for another thousand years.

[[/folder]]

[[folder: Video Games ]]

* ''VideoGame/BreathOfFireDragonQuarter'' is set in an underground realm rife with pollution and monsters. The object of the game is to get a certain character, who was genetically engineered into a walking pollution purification plant, up to the nature-y and now-pristine-and-human-free surface world, as the pollution will slowly kill her otherwise.
** Notably, no one ''knows'' that the surface is pollution-free: the reason humans are underground at ''all'' is because the surface was ravaged and made exceedingly dangerous by some unspecified event in the past. The only things Ryu knows is that a) Nina can't survive in the pollution underground and b) the pollution gets significantly lower the closer to the surface you get. It's not until the very end of the game that people discover the surface is not just livable, but beautiful.
* ''CityOfHeroes'' and its "expansionalone", ''City of Villains'' has a few zones that fit this trope. One example is the area previously named "Woodvale", but referred to in-game almost exclusively as "Eden". Here, the player can find many vistas of pristine wilderness trying to crawl its way back across a previously urban landscape. In a twist, all the nature ''hates humanity''.
** Not so much nature as a scientifically created [[TheVirus Virus]] created by a MadScientist environmentalist. There's the spirit of a true nature guardian killed by them that helps heroes.
* Ironically subverted in ''EveOnline'' - the New Eden system was initially a paradise, but was destroyed by the catastrophic collapse of the EVE wormhole. It is now a [[CrapsackWorld Crapsack Galaxy]].
* ''VideoGame/MegaManX5'' had [[ColonyDrop the crash of the Eurasia colony]] as the ecological disaster. Flash forward to ''VideoGame/MegaManZero 4'', and with [[BigBad Dr. Weil]] now ruling Neo Arcadia with an iron fist, the dissenters are fleeing to Area Zero, a land made naturally pristine thanks to an environmental conditioning system left active after the crash. Area Zero is the hope of the people in that fragment of the timeline for a life free of Weil's influence; fitting his role as the BigBad, Dr. Weil employs the Neo Arcadia militia to raze the area, up to and including manufacturing the [[KillSat Ragnarok Satellite]] for just that end; needless to say the whole point of the game is to prevent Area Zero's demise.
* [[CommandAndConquer Tiberium Wars]] subverts it slightly. The first Blue Zone (think the First world) to be converted from a Yellow Zone (think Mogadishu with ToxicPhlebotinum added to the mix) is given the name New Eden. It is a subversion because it was a result of human (or more specifically, GDI) efforts and because it gets wrecked and is implied to revert to a Yellow Zone thanks to the Scrin blowing up Tiberium Deposits and using Tiberium-based weapons.
* This is basically the {{backstory}} of ''VideoGame/ArmoredCore'', both the original PS1 series and ''Armored Core 3'' continuity. While it is never really explored in the first series, the third has the Raven (ie, you, the player) destroy a [[AIIsACrapshoot malfunctioning]] [[DeusEstMachina AI Administrator]] that controls your underground habitat. After doing so, a hidden subroutine made the AI open the gates to the newly healed Earth, the new Eden. That's the first game. Needless to say, due to the humans and corporations now left without any checks and balances going to the surface, the Earth [[FromBadToWorse gets worse]] progressively through the game.
* In ''VideoGame/MassEffect2'', the homeworld of the quarians is becoming this, after they all basically got kicked off their planet in a war with their creations, the geth, which also severely damaged the planet. [[spoiler:Legion reveals that the geth don't even use the planet, but help heal it instead, as a sort of monument to their creators, and a present, if the quarians ever announced a truce the geth could accept.]]
** Though from what's described [[spoiler:and shown]] the planet is naturally rather arid, so Eden in a traditional garden sense is YMMV.
* The ''[[VideoGame/{{Civilization}} Call To Power]]'' games allows you to CAUSE this, just faster. By completing the Eden Project, switching to a [[UtopiaJustifiesTheMeans Ecotopian]] government and churning out Eco Ranger units, you can systematically wipe out every sprawling, polluting city in the world, replacing them (and the surrounding area) with [[http://www.youtube.com/watch?v=bxBVc2cSFeI pristine wilderness]].
* ''ArTonelico2'': Finally happen to Sol Marta after a [[UtopiaJustifiesTheMeans long]], [[WellIntentionedExtremist tragic]], [[FromBadToWorse desperate]] struggle; by way of the elusive Metafalica that everyone is after. Considering that this game can be described as [[FromBadToWorse it got worse]]: The JRPG, it's one of the most triumphant example of EarnYourHappyEnding.
** In fact, NewEden is the goal of the entire series. The ending of ''ArTonelico3'' shows that HopeSproutsEternal and the entire planet slowly turning from dead brown into blue and green.
* VideoGame/EnslavedOdysseyToTheWest: A large portion of the game takes place in breathtaking ruins of cities so post-apocalyptic that they're covered in lush greenery.
* VideoGame/TheLastOfUs
* The Cult in the ''Franchise/SilentHill'' series of games wants to institute this; their ultimate goal is to facilitate the incarnation of God, who will wipe away the sins of the world and create a literal New Eden, a paradise for the faithful. Unfortunately, their belief system is some kind of twisted amalgamation of Native American spirituality, fanatical (and heretical) Christian ideology and some sort of general occultism. Everything non-indoctrinated people witness shows that the "cleansing fire" would [[SubvertedTrope definitely NOT]] pave the way to paradise. In fact, very few members of the Cult even stop to ask the question why a beneficent God would need to be born via a human sacrifice that would lead not to death but to ''years of physical and psychological torture'', or why the "Paradise" its nascent presence begins to create is a rusty, burnt-out parody of the real world full of nightmarish creatures literally spawned from peoples' psychosis...
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[[folder: Western Animation ]]

* ''WesternAnimation/AdventureTime'' could be an example of this considering that it is [[AfterTheEnd after the apocalypse]]. A lot of places are pretty lush and colorful but some are in pretty bad shape.
* In the ''WesternAnimation/JusticeLeague'' episode "Hearts And Minds" the planet Kalanor is a barren desert world that used to be a paradise. Its lifeforce, the Py'tar, was trapped inside it and needed someone to act as its conduit to heal Kalanor. Unfortunately, the chosen conduit Despero abused the Py'tar's power, using it as a tool of galactic conquest in the mistaken belief that this is what would turn Kalanor into a paradise again. The Martian Manhunter's PsychicPowers allow him to become another conduit and the Py'tar entreats the people of Kalanor to reject Despero's warmongering ways and embrace peace. The moment they do, the Py'tar changes its true form, a WorldTree, and covers Kalanor in lush greenery again.
* In the series finale of ''WesternAnimation/BeastMachines'', [[spoiler:Optimus Primal's HeroicSacrifice foils Megatron's plan to become Cybertron's GeniusLoci and reformats Cybertron into a technorganic paradise.]]

[[/folder]]

[[folder: Real Life ]]

* [[http://www.sciam.com/article.cfm?chanID=sa006&articleID=2691D716-E7F2-99DF-38F54EF6075AAB4D&pageNumber=1&catID=2 "An Earth Without People"]] was an article in ''Scientific American'' that addressed how likely this trope would be.
* A recent television program was aired on the History Channel called ''Series/LifeAfterPeople'' which explored, in vivid CGI, what would happen to the world we leave behind if every human on earth disappeared.
* The demilitarized zone between North and South Korean is a refuge for all sorts of plants and wildlife, simply because no human dare set foot in it for fear of getting shot by the other side (also land mines).
** The same happened in the (former) border zone between East and West Germany.
*** In fact the whole border between the West and former Warsaw Pact nations is similarly undisturbed. The [[http://en.wikipedia.org/wiki/European_Green_Belt European Green Belt]] project aims to preserve it.
* One theory claims that this was the reason why Europeans found the American continent near-empty and booming in wildlife. Not so much because it was better preserved (American fauna is in fact a lot poorer and less diverse than Old World fauna if compared to what it was before the last Ice Age) but because the previous generation of Native Americans had been decimated by European plagues advancing before the invaders proper.
* A famous photographer snuck into the (US) Hanford Nuclear reservation to do a coffee-table book on the resurgence of nature in the [[ForbiddenZone heavily contaminated]] former nuclear-testing site, now off limits to humans, with similarly controversial findings. Similar photographic and natural studies have been done of Bikini Atoll, which is now teeming with fish thanks more to the absence of humans, since they are not considered safe to eat.
** The fish, not the humans. Although...
* The city of Pripyat in the Ukraine. Despite the entire area being contaminated by radiation due to the damaged Chernobyl reactor, wildlife levels in the exclusion zone are at levels not seen since before the beginning of the twentieth century. It's called the Chernobyl effect. Radiation is bad for animals, but humans are worse.
** That's actually heartbreakingly depressing. Humans are ''worse than nuclear radiation''.
** The Chernobyl Nuclear Exclusion Zone in Ukraine is now a [[http://en.wikipedia.org/wiki/Chernobyl_after_the_disaster wildlife preserve]]. As a result of [[http://www.nsrl.ttu.edu/chornobyl/wildlifepreserve.htm the wildlife boom due to the absence of humans]], [[ILoveNuclearPower "Radioactive Boars"]] [[http://sg.news.yahoo.com/afp/20100807/tts-germany-hunting-food-chernobyl-509a08e.html are on the loose in Germany]], wreaking havoc.
* Shortly after the US entered WW2, German u-boats began patrolling off the eastern seaboard. This made it extremely dangerous for fishing boats to go out, because they were effectively unarmed and likely to get sunk. The result of several years free of human fishing was that fish populations exploded. However, certain species have been so overharvested that scientists believe they will never recover.
* Some of the most biologically diverse regions of the UK are actually in military training areas - because of the closed nature of these areas, as well as the strict rules the military have promoting rotation and protection (some parts of the training areas are even off limits to infantry and vehicles)
** The same is true for training camps of the Germany military, the Bundeswehr. In fact, one of many amusing adds claims that tanks are good for nature, because their threads leave behind holes in the soil which collects rainwater, which in turn brims with wildlife such as microbia, worms and insects. Plus bigger wildlife can drink it.

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