Humans, known taxonomically as Homo sapiens (Latin: "wise man" or "knowing man"), are the only living species in the Homo genus of bipedal primates in Hominidae, the great ape family. Anatomically modern-appearing humans originated in Africa about 200,000 years ago, reaching full behavioral modernity around 50,000 years ago.
Humans have a highly developed brain, capable of abstract reasoning, language, introspection, and problem solving. This mental capability, combined with an erect body carriage that frees the hands for manipulating objects, has allowed humans to make far greater use of tools than any other living species on Earth. Other higher-level thought processes of humans, such as self-awareness, rationality and sapience, are considered to be defining features of what constitutes a "person".
Like most higher primates, humans are social animals. However, humans are uniquely adept at utilizing systems of communication for self-expression, the exchange of ideas, and organization. Humans create complex social structures composed of many cooperating and competing groups, from families to nations. Social interactions between humans have established an extremely wide variety of values, social norms, and rituals, which together form the basis of human society. With individuals widespread in every continent except Antarctica, humans are a cosmopolitan species. As of January 2012[update], the population of humans was estimated to be about 7 billion.
Humans are noted for their desire to understand and influence their environment, seeking to explain and manipulate phenomena through science, philosophy, mythology and religion. This natural curiosity has led to the development of advanced tools and skills, which are passed down culturally; humans are the only species known to build fires, cook their food, clothe themselves, and use numerous other technologies. The study of humans is the scientific discipline of anthropology.
An advanced humanoid species known to humans as Engineers, are responsible for the creation of humanity. Approximately at Circa 3.2 Billion BC, a Lone Engineer ingests a Black Liquid and sacrifices himself to seed Earth with the building blocks of life.
Early contact with other world life formsEdit
Humans first originated on the planet Earth, where they were little more than savages and barbarians. However, they were discovered by the hunter species the Yautja. These "Predators" taught the humans how to build. In turn, the humans worshipped the Yautja and served as hosts for a parasitic species known as Xenomorphs. The Yautja used the xenomorphs as prey, killing them for honor as both sport and a rite of passage for young Yautja. Every hundred years, the Yautja would return to Earth, breeding Xenomorphs from the human hosts. However, one of these trials went awry, with nearly thousands of Xenomorphs running wild. Outnumbering the three Yautja trainees, the final surviving warrior detonated a self-destruct device, wiping out the entire ancient city in what is now Antarctica.
Humanity was not extinguished there, however. They spread across their planet, growing and evolving. Ultimately, they began warring against each other for a variety of reasons. Every hundred years, the Yautja would return to Earth to train and breed Xenomorphs, wiping out an entire mining team in Antarctica in 1904.
Exploration and expansion into spaceEdit
Humans would still have incidents with the Yuatja out side of the predators training attempts. In 1987, a group of commandos led by Alan "Dutch" Schaefer were in Val Verde, Guatemala, under orders to rescue a presidential cabinent member that was captured by the local guerilla forces. During their mission several members of the squad were brutally and mysteriously killed, they became aware that something unknown was stalking and hunting them throughout the jungle. Soon, only Dutch and a local refugee named Anna remained alive. Dutch sent Anna to the rescue helicopter unarmed, knowing the hunter only kills those that are armed. After the creature revealed itself as a masked, bipedal alien, he covers himself in mud to mask his body's heat signature. After a tense battle, Dutch managed to trap and wound the creature. Rather than admit defeat, however, the Yuatja activated its self-destruct device. It was killed, but Dutch barely escaped just in time to escape the blast. He would tell the government of his encounter with the Predator, spawning humanity's first recorded knowledge that they were not alone in the universe.
They would again meet the Yautja ten years later, in 1997. In Los Angeles, during a vicious gang war between Columbian gangs, Jamaican gangs, and the thinly spread police, a Yautja ship arrived in the city, where a single Yautja was hunting humans from all three factions. A detective, Mike Harrigan, became aware that "there was a new player in town" after finding the corpses of gang members, all violently killed. He bagan tracking the Yautja down, with the help of his team, but not before two members of his team were killed. Harrigan was then captured by Special Agent Peter Keyes, and informed of the true origins of the predator. They had known about the Yautjas since 1987, when Alan "Dutch" Schaefer reported the incident at Val Verde. With the help of Keyes' team, Harrigan trapped the Yautja at a meat packing plant, injuring it and following it to the predator's ship, where he killed it using its own weaponry. The other Yautja honored his honorable victory by giving him an authentic flintlock pistol from the 1700s. The predator ship then took off into space, leaving Harrigan on Earth. The remains of Keyes's team were furious that Harrigan let the Predators escape. Harrigan told them that "they would get another chance", implieing the Yautja would return to Earth someday.
In 2004, a Weyland Industries station detected a heat bloom underneath Antarctica. A team, led by Charles Bishop Weyland and Alexa Woods, journeyed to Antarctica to investigate the pyramid they discovered with the satellite photos. They discovered a tunnel that went all the way down to the pyramid. they went deeper into the pyramid, claiming the three Plasma Casters they found as their own. They came under attack by three untried Yautja warriors and Xenomorphs that had been awoken by the pyramids activation. Soon, only one human remained alive, after the rest, even Weyland had been killed, leaving Alexa Woods the only survivor. She allied herself with the last remaining Yuatja and set out to destroy the Xenomorphs. The Yautja detonated its self-destruct device and they escaped the pyramid. They got to the surface, but a Queen Xenomorph had escaped the blast and followed them to the surface. A battle ensued, ending with Alexa killing the Queen, but The Yautja had been mortally wounded. As the Predator died, the mother ship decloaked and carried the fallen warrior's body away. The Elder Predator saw the mark of the Warrior on Alexa's cheek and awarded her with his tribal spear. Unknown to either the Yautja or Alexa, the fallen warrior had a chestburster inside it. As the mother ship sped away from Earth, the chestburster exploded out of the dead Yautja. The chestburster was revealed to be a PredAlien, a hybrid of the Xenomorphs and the Yautja. The infant Predalien snuck aboard a scout ship to grow.
The scout ship detached from the mother ship and flew away, with the Predalien inside. The now mature Predalien began to kill the few Yautja on board, resulting in the scout ship crashing towards Earth. It landed in Gunnison, Colorado. Several facehuggers that were in captivity on board the scout ship broke free into the woods, infecting a father and son hunting. The only surviving Yautja managed to activate a distress signal, just before he was killed by the Predalien. The Xenomorphs began to spread through the sewers. They broke out and began to infest the small town. A small group of survivors, Sheriff Morales,Kelly O'Brien and her daughter Molly, and the brothers Ricky and Dallas, decided to find a way to escape. They made their way to the gun store, being hounded by the Xenomorphs, and a Yautja warrior that had received the distress signal. The National Guard arrived, but was killed by the Xenomorphs. The survivors managed to call Colonel Stevens, who said that an airlift would be waiting for them in the middle of town. Sheriff Morales believed him, but Kelly knew something was wrong. She took her daughter and Dallas and Ricky to the hospital, where the Predalien had made a hive, to escape on board the medical helicopter, while Morales rallied the surviving citizens in the city center for the airlift. They fought through the battling Xenomorphs and Yautja warrior, where Dallas recovered the Predator's dropped Plasma Caster, where he used it to buy time for Kelly to activate the helicopter. Just as they escaped, the government dropped a tactical nuclear bomb on the town, wiping out the Xenomorphs, Yautja, and surviving citizens. The helicopter crashed into the woods, where they were rescued by U.S. soldiers. They confiscated the Plasma Caster from Dallas and turned it into Colonel Stevens. Stevens took the gun to Ms. Yutani, who said "The world isn't ready for this technology." to which Stevens replied "But this isn't for out world, is it Ms. Yutani?" The humans now had Yautja technology.
Humanity's technology advanced and grew, as the humans exhausted Earth's natural resources. They expanded into space, and in 2122, the cargo ship Nostromo received a distress signal from LV-426. The ship landed on the planet where they found a derilict ship. While searching the ship they found "the Space Jockey/Pilot" and numerous Xenomorph eggs seemingly in some form of stasis. One of the Nostromo crew named Kane attempted to get a closer look at the eggs however it instead opended and a Facehugger lactched onto Kane's face. After much arguing about contamination protocol among the crew they finally decided to let Kane on board. The crew then studied the creature on Kane's face and attempted to cut the creature off but this proved almost disastrous due to the acidic nature of the creatures blood. After a few hours the Facehugger let go. At dinner Kane began to shake and have chest pains, he then was laid on the table where a Chestburster punched through his chest and ran off. The crew stood in horror at the sight they had just witnessed.