Archaic humans is a broad category denoting all species of the genus Homo that are not Homo sapiens. Among the earliest modern human remains are those from Jebel Irhoud in Morocco, Florisbad in South Africa (259 ka), and Omo-Kibish I in southern Ethiopia. Some examples of archaic humans include H. antecessor (1200–770 ka), H. bodoensis (1200–300 ka), H. heidelbergensis (600–200 ka), Neanderthals, H. rhodesiensis (300–125 ka) and Denisovans,
Homo rhodesiensis ("Broken Hill Cranium"): dated to 324,000 to 274,000 years ago.
Anatomical comparison of the skulls of anatomically modern humans (left) and Homo neanderthalensis (right)
Humans or modern humans are the most common and widespread species of primate, and the last surviving species of the genus Homo. They are great apes characterized by their hairlessness, bipedalism, and high intelligence. Humans have large brains, enabling more advanced cognitive skills that enable them to thrive and adapt in varied environments, develop highly complex tools, and form complex social structures and civilizations. Humans are highly social, with individual humans tending to belong to a multi-layered network of cooperating, distinct, or even competing social groups – from families and peer groups to corporations and political states. As such, social interactions between humans have established a wide variety of values, social norms, languages, and traditions, each of which bolsters human society. Humans are also highly curious: the desire to understand and influence phenomena has motivated humanity's development of science, technology, philosophy, mythology, religion, and other frameworks of knowledge; humans also study themselves through such domains as anthropology, social science, history, psychology, and medicine. As of May 2024, there are estimated to be more than 8 billion humans alive.
Human
Choropleth showing Population density (people per square kilometer) estimates by 30 arc-second grid in 2020
Reconstruction of Lucy, the first Australopithecus afarensis skeleton found
Great Pyramids of Giza, Egypt