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| | {{Taxonomy|name=Human|image=Billy_sunday.jpg|kingdom=Animalia|phylum=Chordata|subphylum=Vertebrate|class=Mammalia|order=Primate|family=Hominidae|genus=homo|species=sapiens}} | | {{Taxonomy|name=Human|image=Billy_sunday.jpg|kingdom=Animalia|phylum=Chordata|subphylum=Vertebrate|class=Mammalia|order=Primate|family=Hominidae|genus=homo|species=sapiens}} |
| − | Humans, or human beings, are classified by biologists as '''''homo sapiens''''', from the [[Latin]] ''homo'' meaning "man", and ''sapiens'' meaning "wise",<ref>[http://www.etymonline.com/index.php?search=Homo+sapiens&searchmode=term Online Etymology Dictionary]</ref>. Modern humans are more specifically classified as homo sapiens sapiens. | + | '''Humans''', or '''human beings''', are classified by biologists as '''''homo sapiens''''', from the [[Latin]] ''homo'' meaning "man", and ''sapiens'' meaning "wise",<ref>[http://www.etymonline.com/index.php?search=Homo+sapiens&searchmode=term Online Etymology Dictionary]</ref>. Modern humans are more specifically classified as homo sapiens sapiens. |
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| − | Humans are characterized by a highly developed brain capable of abstract reasoning, language, and introspection. This mental capability, combined with a body suitable for standing erect such that their upper limbs are free to manipulating objects, allows humans to make far greater use of tools than any other species. | + | Humans are characterized by a highly developed [[brain]] capable of abstract reasoning, l[[anguage]], and introspection. This mental capability, combined with a body suitable for standing erect such that their upper limbs are free to manipulating objects, allows humans to make far greater use of tools than any other species. |
| − | The design of the larynx gives a physiological capacity for speech. Consciousness is of unknown source; speculations include being an emergent property of a complex brain and the mind existing independently of the body. | + | The design of the [[larynx]] gives a physiological capacity for speech. Consciousness is of unknown source; speculations include being an emergent property of a complex brain and the mind existing independently of the body. |
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| − | Humans have more hair follicles than chimpanzees, one of the next most similar species, but shorter finer hair in most body areas makes this hard to see. Hair and skin colour varies according to the amount of melanin, a pigment that helps protect skin from the sun. Originally an adaptation to climate, pigment variation is now found globally. | + | Humans have more [[hair]] follicles than chimpanzees, one of the next most similar species, but shorter finer hair in most body areas makes this hard to see. Hair and skin colour varies according to the amount of melanin, a pigment that helps protect skin from the sun. Originally an adaptation to climate, pigment variation is now found globally. |
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| | Humans now inhabit every continent including [[Antarctica]], with a total population of over 6.5 billion as of 2007. | | Humans now inhabit every continent including [[Antarctica]], with a total population of over 6.5 billion as of 2007. |