Monday, February 14, 2011

Humans


Humans, known taxonomically as Homo sapiens(Latin for "wise man" or "knowing man"), are the onlyliving species in the Homo genus of bipedal primates inHominidae, 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 abstractreasoninglanguageintrospection, 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-awarenessrationality, 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, fromfamilies to nationsSocial 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 2011, the population of humans was estimated to be about 6.89 billion.
Humans are noted for their desire to understand and influence their environment, seeking to explain and manipulate phenomena through sciencephilosophy,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 firescook their foodclothe themselves, and use numerous other technologies. The study of humans is the scientific discipline of anthropology.

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