It is, as to be assumed, that the remnants of the once heavily populated planet of Earth holds no greater mammalian life; any sort of primate or homosapien-like organism that used to live there did not exist anymore. However, this is not true, as one greater mammal - that of a human - did, at one point, make the overgrown planet its home. It was not for very long, assumingly only a few years as the planet at that time had such a high oxygen level because of the amount of plants that inhabited it.

After humans left the galaxy that Earth was a member of, they left their past behind; the city-scape that was Io eventually became a wasteland of old buildings that at one point touched the sky; the gardens of Mercury became overgrown sense the care-takers of the planet did not live there anymore; Europa’s mines and outposts became frozen over; Mar’s sands and rocks reclaimed its realm; Venus, much like Mercury, once was a lush world, but soon the terraforming that had taken place to shape Venus into a plant inhabited world, eventually went away; Saturn’s mining settlements in its rings began to break down and fall apart since there was no one there to take care of it; Triton’s volcanic tundra came to lay dormant; and the Earth, much like its fellow companions, grew over its now ancient architecture that littered its surface, and its seas became rich and abundant in life.

As mentioned before, the oxygen levels of the Earth began to rise, and soon only entities that were small in size survived on the planet. This, however, did not affect aquatic life, as the organisms of the sea were freed from the termination of their numbers by the wastes that came from humanity. Fish of all shapes and sizes were able to reproduce in the water and become abundant, and volcanoes that at one time lay sleeping under the waters were stirred awake, erupting into storms of rock and debris, and once their plumage went away they began to pour out magma that, when cooled, turned into new islands. Some of the byproducts of these eruptions were spread throughout the seas, and this helped in giving the fish something to eat and a way to quickly reproduce. Great forests of kelp began to grow bigger than they had ever been before, and the number of coral reefs increased as there was no one that endangered them. Cnidaria - especially life forms of the subphylum Medusozoa - began to take their homes in the deep, abyssal sections of the Thalassic Expansion, making it seem like the creatures were having elegant balls where they dance back and forth with each other in a silent world.

Invertebrates began to flourish on the grounds of the terrestrial beast; if it were not for the increase in oxygen, arthropods would not have been able to survive so well on this new Earth. Towering, stalking organisms that used to be the tiny life forms that one once stepped upon with their shoes were now creatures that walked like giants. They now had a diverse ecosystem, consisting of a large food chain that they all followed and fit into well. The beasts traveled across the lands easily, and they came to be known as the “kings of the forest”.

Now, this human that inhabited the lands was not native to Earth; he was not supposed to be there. If there were to be more humans, the planet’s balance would be devastated and possibly even ruined. This balance had been perfected over a long period of time, where the growth of plants and animals was coalesced and harmonized; something of great magnitude was needed to interrupt this ecosystem. Of course, one human would not have that much effect on the ecosystem. The human, whose original name was “Isaack”, was, as mentioned, not originally from the Earth. He, unlike the other inhabitants of the planet, was not even from the solar system that the Earth was a part of, as all of the planets in the Milkyway had not had human inhabitants for centuries.

Isaack was initially a freight-ship pilot, and he had been trapped on Earth because when he was traveling through the Fallen Dead Zone—that being the “dead zone” that is a specific section of the Milkyway that includes the solar system known as Sol (although that name has been lost in time)—his freight-ship malfunctioned, and eventually he ended up stranded on Earth. His escape pod that came from his ship, as most spacecrafts have, had landed upon a white sand beach neighbouring the ocean, while the ship that it accompanied plummeted into the ocean, going to the deepest possible depths that it could go down to. The only items that were inside of the pod were five packs of prepackaged food, and with that was a battery pack that, sadly, would have no use to him; the battery only had about an hour's amount of energy. Never did it occur to Isaack that he would be stranded out in an area where he would need necessities, and the things that he would need to live on an unknown planet were all in his freight-ship, which, as mentioned before, he had no access to any longer. If one were to travel upon the beach, traveling away from the direction of the sea, they will soon find themselves in a dense forest, where life of all kinds prospered and flourished.

From there, Isaack made Earth his home. He accepted his fate of being confined to this planet, and at some point, the idea of being stuck in an almost botanical paradise became fascinating to him and he enjoyed it. Since he now had no true purpose and the cargo that he was attempting to bring to a system that could only be seen in the night atmosphere was trapped on Earth with him he began to study things that he never knew existed and he never had had the time to research and learn about. He became fascinated with the nautical-scape that lay next to the seaboard, and he began to study the abyssal creatures that made it their home. Training himself so that he was able to hold his breath for extended periods of time, Isaack soon was able to go underwater and see the deep-sea creatures that lived below the surface. He witnessed the dances of jellyfish that happened just below the surface of the ocean and the schools of iridescent fish that were flaunting their bio-luminescent qualities. He saw the crowns of the kelp jungles that stretched for miles, almost seeming to have no end. It was made apparent to Isaack very quickly that he never had the ability to reach the bottom level of the deep - the level just before the abyssal level - if he did not have any type of aquatic gear. The only thing that he could do was “snorkel” in some sense with shortly rooted reeds that he found off the bank.

Taking advantage of all of the natural resources that were presented to him in this novel world, Isaack began to erect an abode for himself out of bamboo-like grasses and the aforementioned reeds. If it were not for these materials, Isaack never would have been able to have some sort of barrier between him and the elements outside. His new home - albeit crude - was to some extent a model of pure human intelligence; if it were not for his intelligence gifted to him by something - whether it be a deity, his parents, or some far off progenitor in his lineage - he would of never of had the ability to envision the mere idea of what his shelter would look like rather than how to construct it. Using that intellect, he had the ability to design a home that was elevated from the shore, so that if there were to be a high-tide or a tide that is higher than a usual high-tide, he was protected from the saline and briny waters, and the structure also gave him protection from the tropical sun that beamed down upon the beach, warming up the sands so that if one were to stand upon them barefoot they have had recoiled from the temperature that they sat at. At times, it rained, and the roof of the structure had the water slip down it, and so Isaack once again used his intelligence to create a mechanism wherein the rainwater that fell down from the roof and to the ground was - in lieu of getting soaked into the sands of the beach - caught inside of some sort of vessel for liquid. This was able to give Isaack enough saturation so that his thirst was quenched when need be. If it were not for the ever sustaining amount of fruit that the tropical plants of the dense forests produced, Isaack might have starved to death. Similarly to his intelligence, using his survival skills that are written into the natural code of a human being, Isaack sustained himself with both fruit, as mentioned, but also meat from the bounding and providing seas. From all of these resources, Isaack was given the ability to make a sustainable life for himself.

Oftentimes, Isaack traveled to areas that he had not been to before. When he did this, he usually came across different materials that were not common, or more so “unnatural”, in the sense that they were synthesized or man-made; these mediums, usually, were capable of being salvaged, so that the parts of them that were important to survival could be scrapped and used to craft something that Isaack needed. If it were also not for these salvageable items, Isaack would not have the amount of advanced technology that he had. Sometimes, Isaack stumbled upon canisters that could either be scrapped for the metals and plastics that they were made of, or the inside materials - being possibly water, some sort of gas, or rarely a metal or solid material - could be used for other purposes.

Rarely, Isaack traveled far off into yet to be “tamed” areas; the entire Earth, for that matter, was all untamed, for all of it had gone for what seemed like eons without feeling the touch of man. A fair amount of the Earth was dangerous, and one risked their life by going through those specified areas, such as the acrid plains that were made by the eruption of acidic geysers, wherein the boiling fluids from the Earth burst forth from their Earthen cells, throwing themselves all about and burning most life forms that can come in contact with them, save for the archaeans that took home in their steaming pools. Other areas, such as the volcanic plains near the north and south poles, where the freezing temperatures battled with the extreme heat of the magma that went out onto the ice and snow, were also very hazardous, along with the daring, snow capped mountains, the mesas that were infested with massive insects that enjoyed the arid conditions, and the tormenting, vast seas that seemed to reach onward onto the horizon, with their deep blue waters that seemed to have no bottom and only continued to go down until it seemingly reached the Earth’s core. With all of these descriptions of biomes where there are horribly extreme conditions, it becomes clear that out of all of the different planets that make up Sol, the Earth is the most diverse, especially after going through a time period where it developed into its true potential of housing life.

As assumed, Isaack was living in some area that was along the imaginary line that is known as “the Equator”. With the described hot and humid conditions, it is surprising that truly the jungles and forests that he lived in were actually one of the most tame places. Isaack, however, most definitely lived somewhere slightly north of the Equator, as he was on some sort of mainland, since he was capable of traveling deeper into the jungle without eventually coming across a clearing where there would be a beach or shore of some kind. Even with the exception of fresh and drinkable water as a commonplace luxury that was almost overabundant once it was found in cool, flowing springs somewhere deep in the jungles, the tropical environment was still something that needed to be battled with. This risk of sweating out all of the water that one had just drank was very high; working oneself easily brought up their average body temperature and then their body started to continuously sweat any saturation that the person had, and it was not any better that it was hard for one to be able to cool down. The constant bombardment of heat from the Sun - which was actually decreased on a slight scale because of the smaller amount of greenhouse gases in the atmosphere - made living in the aforementioned botanical paradise quite difficult, but thankfully it was easy for one to find some sort of leaf that was large enough to take a break and also take shade from the noontide sun. Although there was an abundance of water, the work that Isaack put himself through to make his home, to support himself, and the often small adventures he went on decreased the amount of water inside of his body drastically and made him require a higher rate of water consumption.

Even though it was hard for Isaack to be able to keep the water that he consumed inside of his body and to have it not be sweat out, Isaack could find fruits and vegetables that supplied him with great amounts of saturation and quench his thirst when need be - although, the fruits were smaller in size than most people were accustomed to, sense the Earth was only living to keep itself alive and satisfied, instead of those that inhabited it. The need for large fruits for trees and plants was not great, as mainly only average-sized animals needed to eat them; but, there was, like the amount of water, an abundance of fruit-bearing trees, meaning an abundance of fruit, so that one did not die of starvation if they were living in this rainforest. Similarly, there was a surplus of vegetables and other types of growth that were available to be picked and eaten; one had the ability to easily find edible roots, ripe tomatoes, cucumber-like plants, and other foods as there were so many of them. Using all of these different types of food that were offered to Isaack by the jungle, he was able to sustain himself and keep a very healthy diet. He never went hungry, and since winter and its harsh bitterness could never come, the plants could continuously produce food and sustenance for Isaack and all of the creatures that inhabited the area. All of the plants that lived in the forest had never felt the cold touch of frost, and they seemed to almost be content with their humid conditions; they only knew what the hot, beaming sun felt like.

If it were not for all of the gifts that the forest had to offer Isaack would have died.