The World is a proper noun for the planet Earth envisioned from an anthropocentric or human worldview, as a place inhabited by human beings. South America is a Continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a The Pacific Ocean is the largest of the Earth 's Oceanic divisions The Pacific Ocean is the largest of the Earth 's Oceanic divisions The Indian Ocean is the third largest of the world's Oceanic divisions covering about 20% of the water on the Earth 's surface The Southern Ocean, also known as the Great Southern Ocean, the Antarctic Ocean and the South Polar Ocean, comprises the southernmost waters of The Arctic Ocean, located in the Northern Hemisphere and mostly in the Arctic north polar region is the smallest and shallowest of the world's five major The Middle East is a Subcontinent with no clear boundaries often used as a synonym to Near East, in opposition to Far East. The Caribbean (ˌkærəˡbiən kæ'rəbiən Cariben|Caraïben or Caraïben; Caraïbe or more commonly Antilles; Caribe is a Region consisting Central Asia is a region of Asia from the Caspian Sea in the west to central China in the east and from southern Russia in the north to northern Pakistan in the south North Asia or Northern Asia is sometimes defined as a Subregion of Asia consisting only of the Asian portion of Russia. Southwest Asia or Southwestern Asia (largely overlapping with the Middle East) is the southwestern portion of Asia. Australasia is a Region of Oceania: New Zealand, Australia, Papua New Guinea, and neighbouring Islands in the Pacific Melanesia (from Greek: μέλας black, νῆσος island) means "islands of the black-skinned people" Micronesia, from the Greek mikros (μικρός (meaning small) and nesos (νῆσος (meaning island) is a Subregion Polynesia (from Greek: πολύς many, νῆσος island) is a Subregion of Oceania, comprising a large grouping of over The Americas are the lands of the Western hemisphere or New World, consisting of the Continents of North America and South America Central Africa is a core Region of the African Continent often considered to include Burundi, the Central African Republic, Chad East Africa is the Easternmost Region of the African Continent. North Africa or Northern Africa is the Northernmost Region of the African Continent, separated by the Sahara from Sub-Saharan Southern Africa is the Southernmost Region of the African Continent, variably defined by Geography or Geopolitics. West Africa or Western Africa is the Westernmost Region of the African Continent. Central Europe is the Region lying between the variously and vaguely defined areas of Eastern and Eastern Europe is a general term that refers to the Geopolitical region encompassing the easternmost part of the European continent. Northern Europe is a term for the northern part of Europe. The United Nations defines Northern Europe as (Finland The term Southern Europe can have four definitions geographical political climatic phytogeographic Western Europe at its most general meaning means 'all the countries in the West of Europe ' EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 Anthropocentrism (from Greek άνθρωπος anthropos, "human being" and κέντρον kentron, "center" Anthropos (the term Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus A comprehensive world view (or worldview) is a term Calqued from the German word Weltanschauung ( Welt is the German Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus It is often used to signify the sum of human experience and history, or the 'human condition' in general. Experience as a general concept comprises Knowledge of or skill in or Observation of some thing or some event gained through involvement in or History is the study of the past particularly the written record Those who study history as a Profession are called Historians Etymology The human condition encompasses all of the Experience of being Human. ^[1] The world population is over 6. The world population is the total number of living Humans on Earth at a given time 60 billion people. ^[2]

In a metaphysical context, World may refer to everything that constitutes reality and the Universe: see World (philosophy). Metaphysics is the branch of Philosophy investigating principles of reality transcending those of any particular science Reality, in everyday usage means "the state of things as they actually exist" The Universe is defined as everything that Physically Exists: the entirety of Space and Time, all forms of Matter, Energy In philosophy the World is everything that makes up Reality. While clarifying the Concept of world has arguably always been among the basic tasks of Western

Contents 1 Etymology 2 Usage 3 Earth 4 Life 5 Humanity 6 Development 7 See also 8 External links 9 References

Etymology

In English, world may be parsed as rooted in a compound of the obsolete words were, "man", and eld, "age"; thus, its etymology may be semantically rendered as "age or life of man". English is a West Germanic language originating in England and is the First language for most people in the United Kingdom, the United States WERE is an AM radio station licensed to Cleveland Heights Ohio and operating on 1490 kHz. ^[3]

Usage

'World' distinguishes the entire planet or population from any particular country or region: world affairs are those which pertain not just to one place but to the whole world, and world history is a field of history which examines events from a global (rather than a national or a regional) perspective. The equirectangular projection (also called the equidistant cylindrical projection, geographic projection, plate carré or carte parallelogrammatique A planet, as defined by the International Astronomical Union (IAU is a celestial body Orbiting a Star or stellar remnant that is In Biology a population is the collection of inter-breeding organisms of a particular Species; in Sociology In Political geography and International politics, a country is a Political division of a geographical entity The article is about the geographic sense of the term For other uses including Regions and Regional, see Region (disambiguation. World History is a field of historical study that emerged as a distinct academic field in the 1980s. History is the study of the past particularly the written record Those who study history as a Profession are called Historians Etymology Earth, on the other hand, refers to the planet as a physical entity, and distinguishes it from other planets and physical objects.

'World' can also be used attributively, as an adjective, to mean 'global', 'relating to the whole world', forming usages such as World community. In Grammar, an adjective is a word whose main syntactic role is to modify a Noun or Pronoun, giving more information about the The term is used primarily in Political and Humanitarian contexts to describe an international aggregate of Nation states of widely varying types See World (adjective). History See also History of the world Government World government is the concept of a Government that would legislate enforce

By extension, a 'world' may refer to any planet or heavenly body, especially when it is thought of as inhabited. s are significant physical entities, associations or structures which current Science has confirmed to exist in Space.

'World', when qualified, can also refer to a particular domain of human experience. Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus Experience as a general concept comprises Knowledge of or skill in or Observation of some thing or some event gained through involvement in or

• The world of work describes paid work and the pursuit of a career, in all its social aspects, to distinguish it from home life and academic study. Career is a term defined by the Oxford English Dictionary as an individual's "course or progress through life (or a distinct portion of life"
• The fashion world describes the environment of the designers, fashion houses and consumers that make up the fashion industry. Haute couture ( French for "high sewing" or "high dressmaking" oːt kuˈtyʁ refers to the creation of exclusive custom-fitted fashions Consumers refers to individuals or households that use goods and services generated within the economy. Fashion refers to styles of dress (but can also include cuisine literature art architecture and general comportment that are popular in a culture at any given time
• The New World is a part of the world discovered or colonized by Europeans later than other parts; it usually refers to the American continents or to Australia. The New World is one of the names used for the non-Eurasian/non-African parts of the Earth specifically the Americas and Australia. The Americas are the lands of the Western hemisphere or New World, consisting of the Continents of North America and South America For a topic outline on this subject see List of basic Australia topics. Native Americans and Native Australians tend to dislike this usage. For indigenous peoples in the United States other than Hawaii and Alaska see also Native Americans in the United States. Indigenous Australians are descendants of the first known human inhabitants of the Australian continent and its nearby islands. For them America and Australia are not new. Their ancestors have lived there since time immemorial. Time immemorial is a phrase meaning time extending beyond the reach of Memory, record or Tradition. The Old World refers, by contrast, to the continents of Europe, Asia and north Africa. The Old World consists of those parts of Earth known to Europeans Asians and Africans in the 15th century

Earth

Main article: Earth

Earth is the only place in the universe where life is known to exist. The Gall-Peters projection is one specialization of a configurable equal-area Map projection known as the equal-area cylindric or cylindric equal-area EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 The Universe is defined as everything that Physically Exists: the entirety of Space and Time, all forms of Matter, Energy Life is a state that distinguishes Organisms from non-living objects such as non-life and dead organisms being manifested by growth through Metabolism Scientific evidence indicates that the planet formed 4.54 billion years ago,^[4][5][6][7] and life appeared on its surface within a billion years. Modern geologists and Geophysicists consider the age of Earth to be around 4 Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks harmful radiation, permitting life on land. The biosphere is the broadest level of ecological study the global sum of all Ecosystems. Temperature and layers The temperature of the Earth's atmosphere varies with altitude the mathematical relationship between temperature and altitude varies among five In Biology, abiotic components are non-living Chemical and Physical factors in the environment. An aerobic organism or aerobe is an Organism that has an Oxygen based Metabolism. The photochemical mechanisms that give rise to the ozone layer were worked out by the British physicist Sidney Chapman in 1930 In Physics, a magnetic field is a Vector field that permeates space and which can exert a magnetic force on moving Electric charges ^[8]

Earth's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. In Geology, a crust is the outermost solid shell of a planet or moon Plate tectonics (from Greek τέκτων tektōn "builder" or "mason" describes the large scale motions of Earth 's Lithosphere The geologic time scale is a chronologic schema (or idealized Model) relating Stratigraphy to time that is used by Geologists and other About 71% of the surface is covered with salt-water oceans, the remainder consisting of continents and islands; liquid water, necessary for all known life, is not known to exist on any other planet's surface. Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3 An ocean (from Greek, ''Okeanos'' (Oceanus) is a major body of saline water, and a principal component of the Hydrosphere. A continent is one of several large Landmasses on Earth. They are generally identified by Convention rather than any strict criteria with seven regions An island (ˈaɪlənd or isle (/ˈaɪl/ is any piece of land that is completely surrounded by water in two dimensions above high tide and isolated from other significant Water is a common Chemical substance that is essential for the survival of all known forms of Life. ^[9][10] Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inner core. The mantle is a part of an Astronomical object. The interior of the Earth, similar to the other Terrestrial planets, is Chemically divided The inner core of the Earth, its innermost layer as detected by seismological studies, is a primarily solid Sphere about in radius only about 70%

The earth consists of seven continents listed as follows: North America, South America, Antarctica, Africa, Europe, Asia and Australia; the largest of which is Asia. There are several other methods of determining the continents.

Earth is impacted upon by other objects in outer space, including the Sun and the Moon. Outer space, often simply called space, comprises the relatively empty regions of the Universe outside the escape velocities of Celestial bodies. The Sun (Sol is the Star at the center of the Solar System. At present, Earth orbits the Sun once for every roughly 366. 26 times it rotates about its axis. This length of time is a sidereal year, which is equal to 365. The sidereal year is the time taken for the Sun to return to the same position with respect to the Stars of the Celestial sphere. 26 solar days. Solar times are measures of the apparent position of the Sun on the Celestial sphere. ^[11] The Earth's axis of rotation is tilted 23. In Astronomy, axial tilt is the Inclination angle of a planet's rotational axis in relation to its orbital plane. 4° away from the perpendicular to its orbital plane,^[12] producing seasonal variations on the planet's surface with a period of one tropical year (365. In Geometry, two lines or planes (or a line and a plane are considered perpendicular (or orthogonal) to each other if they form congruent The orbital plane of an object orbiting another is the geometrical plane in which the orbit is embedded. A tropical year (also known as a solar year) is the length of time that the Sun takes to return to the same position in the cycle of seasons as seen from Earth 24 solar days). Earth's only known natural satellite, the Moon, which began orbiting it about 4. A natural satellite or moon is a Celestial body that Orbits a Planet or smaller body which is called the primary. 53 billion years ago, provides ocean tides, stabilizes the axial tilt and gradually slows the planet's rotation. Characteristics A tide is a repeated cycle of sea level changes in the following stages Over several hours the water rises or advances up a beach in the flood A cometary bombardment during the early history of the planet played a role in the formation of the oceans. A comet is a small Solar System body that orbits the Sun and when close enough to the Sun exhibits a visible coma (atmosphere or a tail — ^[13] Later, asteroid impacts caused significant changes to the surface environment. Asteroids, sometimes called Minor planets or planetoids', are bodies—primarily of the inner Solar System —that are smaller than planets but

Life

Main article: Life

A diverse array of living organisms can be found in the biosphere on Earth. Life is a state that distinguishes Organisms from non-living objects such as non-life and dead organisms being manifested by growth through Metabolism The biosphere is the broadest level of ecological study the global sum of all Ecosystems. Properties common to these organisms—plants, animals, fungi, protists, archaea and bacteria—are a carbon- and water-based cellular form with complex organization and heritable genetic information. Plants are living Organisms belonging to the kingdom Plantae. A fungus (ˈfʌŋgəs is a eukaryotic Organism that is a member of the kingdom Fungi (ˈfʌndʒaɪ Protists (ˈproʊtɨst are a diverse group of eukaryotic Microorganisms Historically protists were treated as the kingdom Protista but this The Bacteria ( singular: bacterium) are a large group of unicellular Microorganisms Typically a few Micrometres in length bacteria have Carbon forms the backbone of Biology for all Life on Earth. Complex Molecules are made up of carbon bonded with other elements Water is a common Chemical substance that is essential for the survival of all known forms of Life. The cell is the structural and functional unit of all known living Organisms It is the smallest unit of an organism that is classified as living and is often called An organization (or organisation &mdash see spelling differences) is a social arrangement which pursues collective goals which controls its own performance and History See also History of genetics The existence of genes was first suggested by Gregor Mendel (1822-1884 who in the 1860s studied inheritance They undergo metabolism, possess a capacity to grow, respond to stimuli, reproduce and, possibly, through natural selection, adapt to their environment in successive generations. Metabolism is the set of Chemical reactions that occur in living Organisms in order to maintain Life. Reproduction is the Biological process by which new individual Organisms are produced Natural selection is the process by which favorable Heritable traits become more common in successive Generations of a Population of

Humanity

Further information: Human and World population

Humans, or human beings, are bipedal primates belonging to the mammalian species Homo sapiens. Human beings, humans or man (Origin 1590–1600 L homō man OL hemō the earthly one (see Humus The world population is the total number of living Humans on Earth at a given time Bipedalism is a form of Terrestrial locomotion where an organism moves by means of its two rear limbs A primate is a member of the biological order Primates ( Latin: "prime first rank" the group that contains Lemurs the Aye-aye Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands Compared to other species, humans have a highly developed brain capable of abstract reasoning, language, and introspection. Encephalization is defined as the amount of Brain mass exceeding that related to an animal's total body mass. A language is a dynamic set of visual auditory or tactile Symbols of Communication and the elements used to manipulate them Introspection is the self-observation and reporting of Conscious inner Thoughts desires and Sensations It is a conscious mental and usually This mental capability, combined with an erect body carriage that frees their upper limbs for manipulating objects, has allowed humans to make far greater use of tools than any other species. A broader definition of a tool is an entity used to interface between two or more domains that facilitates more effective action of one domain upon the other DNA evidence indicates that modern humans originated in Africa about 200,000 years ago. Deoxyribonucleic acid ( DNA) is a Nucleic acid that contains the genetic instructions used in the development and functioning of all known ^[14] Humans now inhabit every continent and low Earth orbit, with a total population of over 6. A Low Earth Orbit (LEO is generally defined as an Orbit within the locus extending from the Earth’s surface up to an altitude of 2000 km 7 billion as of March 2008. ^[15]

Like most primates, humans are social by nature. However, humans are particularly 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, from families to nations. Social structure is a term frequently used in Sociology and Social theory — yet rarely defined or clearly conceptualised (Abercrombie et al Family denotes a group of People affiliated by consanguinity affinity or co-residence A nation is a Human Cultural and Social Community. In as much as most members never meet each other yet feel a common bond it may be considered Social interactions between humans have established an extremely wide variety of traditions, rituals, ethics, values, social norms, and laws which form the basis of human society. Social interaction is a dynamic changing sequence of Social actions between individuals (or groups who modify their actions and reactions according to the actions by their Social norms have been defined as "the rules that a group uses for appropriate and inappropriate values beliefs attitudes and behaviors Law is a system of rules enforced through a set of Institutions used as an instrument to underpin civil obedience politics economics and society Humans have a marked appreciation for beauty and aesthetics which, combined with the human desire for self-expression, has led to cultural innovations such as art, literature and music. Art refers to a diverse range of Human activities creations and expressions that are appealing to the Senses or Emotions of a human individual Literature is the Art of written works Literally translated the word means "acquaintance with letters" (from Latin littera letter Music is an Art form in which the medium is Sound organized in Time.

Humans are noted for their desire to understand and influence the world around them, seeking to explain and manipulate natural phenomena through science, philosophy, mythology and religion. Science (from the Latin scientia, meaning " Knowledge " or "knowing" is the effort to discover, and increase human understanding Philosophy is the study of general problems concerning matters such as existence knowledge truth beauty justice validity mind and language The word mythology (from the Greek grc μυθολογία mythología, meaning "a story-telling a legendary lore" A religion is a set of Tenets and practices often centered upon specific Supernatural and moral claims about Reality, the Cosmos This natural curiosity has led to the development of advanced tools and skills; humans are the only extant species known to build fires, cook their food, clothe themselves, and use numerous other technologies. Technology is a broad concept that deals with a Species ' usage and knowledge of Tools and Crafts and how it affects a species' ability to control and adapt

Development

Main article: World development

A summary of world development:

• universe is continuing its metric expansion
• our galaxy is approaching its neighbor
• the Sun is shining brighter and brighter
• the Earth's surface is getting hotter
• Species are becoming fewer
• Humans are increasing in number
• Their life expectancy, literacy, education, standard of living, and GDP per capita are increasing
• technology and socioculture are also developing
• Global business are also increasing. The metric expansion of space is the averaged increase of metric (i The Andromeda-Milky Way collision is a predicted Galaxy collision, due to take place in approximately three billion years time between the two largest galaxies in the Local The solar luminosity, L_\odot is a unit of Luminosity ( power emitted in the form of Photons conventionally used by Astronomers to Global warming is the increase in the average measured temperature of the The Holocene extinction event is the widespread ongoing Mass extinction of Species during the modern Holocene epoch. Population growth is the change in Population over time and can be quantified as the change in the number of individuals in a population using "per unit time" for Economic development is the development of economic wealth of countries or regions for the well-being of their inhabitants Technology development is the process of Research and development of Technology. Sociocultural evolution(ism is an umbrella term for theories of cultural evolution and Social evolution, describing how Cultures and societies
• Security concerns are also growing.

See also

• Earth
• Planet
• World map
• Globe
• Universe
• Humanity

External links

• World entry at The World Factbook

References

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