Humans are sentient mammalian bipeds of the genus homo.
On Helevos, humans are the apex species of the green kingdom, largely limited to the continent of Anásthiasplugin-autotooltip__small plugin-autotooltip_bigAnásthias
Anásthias [a-NAS-thee-ass / ænæsθiːæs], or [an-ass-THEE-as] is an equatorial island continent, heart of the Civilised World. The north straddles the equator and is hot and humid, while most of the equatorial centre is an upland plateau with fertile river valleys, and stretches of arid plains and desert in the shadow of the mountains. The south is temperate but more wild, separated from the civilisations of the north by the almost impassable Harthera. The human population of Anásthias has a diversity of skin tone, colour and texture, and degree of hair or hairlessness. These variants have traditionally been divided into ethnicities with common physical and cultural traits.
Ancient humans engineered themselves for very long lifespans, which not only provided long life for individuals, but also tended to make societies stable. However it also makes them very resistent to change, a serious evolutionary disadvantage in difficult environments with strong evolutionary pressure. In rapidly evolving sub-species, long life span is sacrificed in favour of higher fertility or resistance to environmental toxins, so that most modern humans have reverted to a more natural life span of up to 100 standard years.