Human

Humans are a species that originates from Earth. Humans are sometimes referred to as Terrans. Some people use the term "Terran" to refer to things or institutions associated with humanity (Terran cuisine, Terran literature, Terran art, etc). Other humanoid lifeforms and inhabitants of human colonies have been known to refer to Humans from Earth as "Earthers."

Biology
Bilaterally symmetrical bipedal primates, Humans were a warm-blooded humanoid species with an average lifespan of around 120 years, although some individuals achieved a much older age.

They had evolved from the australopithecines. At least three sentient species of human existed on Earth: Homo sapiens, Homo floresiensis and Homo neanderthalensis (the Neanderthals). These species coexisted for some time until first the Neanderthals became extinct followed by Homo floresiensis, leaving only one species of human in the present. Humanity's closest living relative was the chimpanzee.

The Human species was one of the more distinct sentient groups present in the Milky Way Galaxy as, while they did not possess any dominant or noticeable bony ridges around their face or on their bodies as was common to many races throughout space, they did possess a great deal of phenotypic diversity within their species. Skin color, eye color, blood type, facial structures, hair color and hair type varied considerably between individuals and made nearly every single Human distinct in appearance from the next. An exception to this was in the case of identical twins, an anomaly that occurs in approximately three in every 1,000 Human births.

They had two sexes, as was common to many humanoid species. The female of the species was fertile once a month after she reached puberty (between the age of twelve and sixteen) until the onset of a biochemical stage known as menopause (between the age of 45 and 55). Human gestation lasted nine months. The make-up of Human DNA structure was significant, as, with some modifications, it allowed them to cross breed successfully with a wide range of other races across the galaxy.

Humans were not as physically strong as some species, but they were resilient. They were more adaptable to incarceration than Xendar. They could survive with one lung or kidney (they have two of each normally), and they could go days without water and weeks without food due to their bodies' ability to conserve water and live off stored fat respectively. Their bodies' efficient temperature regulation allowed them to resist and survive cold temperatures that would adversely affect other species such as Tzenkethi and Xendar, or high temperatures that would be uncomfortable for an Ovion. They also possessed more acute hearing than Boray.

Humans had iron-based hemoglobin in their blood. Each individual's blood had one of eight types depending on the presence or absence of three antigens called A, B, and Rh. The most common blood types among them were O+ and A+.

Culture
Humans were easily the most outworldly, idealistic and expansionistic race in the Galaxy. Humans had no true specialty or extraordinary qualities and were average in both a technological and physical sense. Instead they were more idealistic, outgoing and cooperative than other races.

Human adaptability and their strong tradition of innovation and cooperation brought them to the forefront of the current Federation interstellar situation. It was for this very reason, however, that Human society was constantly changing and evolving. This was seen not only on the isolated colonies, where the past traditions brought by culturally and geographically homogeneous blocks of colonists compete with new cultural pragmatism demanded of frontier life, but also in the staid and settled core worlds as well. Fashion, speech and especially political views were constantly changing.

For species that were steeped in tradition and genealogical reverence as the basis of their societies, the Human fascination with the novel experience and their unending desire to innovate and explore, to discover for the sake of discovery, were all difficult concepts to grasp.

Jazz music persisted into the 24th century and became a contribution to galactic culture, as did opera music. Humans played music collaboratively in a format known as "classical music."

Competitive sports from human cultures also became part of Terran culture in various ways. Sports played in the included soccer (also known as football), fencing, and wrestling. Other human sports included water polo, baseball and hockey.

Humans expressed themselves through various art forms. One such art form was known as dance.

Human cuisine had a broad spectrum, and was shared widely with other cultures. Humans were omnivorous, unlike vegetarian Terrelian culture. A small sampling of human dishes enjoyed by other species included pecan pie and chocolate. Human foods were often connected to a place, a language, or a family and were a part of a richer cultural experience, such as jambalaya and oden.

Human mating rituals sometimes involved a cultural ceremony known as a wedding to indicate a lasting commitment, as in other cultures.