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The World Portal

The world 
Theworld 

The Blue Marble, a photograph of the planet Earth made on 7 December 1972 by the crew of theApollo 17 spacecraft.

Theworld is the totality of entities, the whole ofreality, or everything thatexists. The nature of the world has beenconceptualized differently in different fields. Some conceptions see the world as unique, while others talk of a "plurality of worlds". Some treat the world asone simple object, while others analyze the world as a complex made up of parts.

Inscientific cosmology, the world or universe is commonly defined as "the totality of all space and time; all that is, has been, and will be".Theories of modality talk of possible worlds as complete and consistent ways how things could have been.Phenomenology, starting from the horizon of co-given objects present in the periphery of every experience, defines the world as the biggest horizon, or the "horizon of all horizons". Inphilosophy of mind, the world is contrasted with the mind as that which is represented by the mind.

Theology conceptualizes the world in relation to God, for example, as God's creation, as identical to God, or as the two being interdependent. Inreligions, there is a tendency to downgrade the material or sensory world in favor of a spiritual world to be sought through religious practice. A comprehensive representation of the world and our place in it, as is found in religions, is known as aworldview.Cosmogony is the field that studies the origin or creation of the world, whileeschatology refers to the science or doctrine of the last things or of the end of the world.

In various contexts, the term "world" takes a more restricted meaning associated, for example, with theEarth and all life on it, with humanity as a whole, or with an international or intercontinental scope. In this sense,world history refers to the history of humanity as a whole, andworld politics is the discipline of political science studying issues that transcend nations and continents. Other examples include terms such as "world religion", "world language", "world government", "world war", "world population", "world economy", or "world championship". (Full article...)

Selected articles -show another

  • Image 1 World Englishes is a term for emerging localized or indigenized varieties of English, especially varieties that have developed in territories influenced by the United Kingdom or the United States. The study of World Englishes consists of identifying varieties of English used in diverse sociolinguistic contexts globally and analyzing how sociolinguistic histories, multicultural backgrounds and contexts of function influence the use of English in different regions of the world. The issue of World Englishes was first raised in 1978 to examine concepts of regional Englishes globally. Pragmatic factors such as appropriateness, comprehensibility and interpretability justified the use of English as an international and intra-national language. In 1988, at a Teachers of English to Speakers of Other Languages (TESOL) conference in Honolulu, Hawaii, the International Committee of the Study of World Englishes (ICWE) was formed. In 1992, the ICWE formally launched the International Association for World Englishes (IAWE) at a conference of "World Englishes Today", at the University of Illinois, USA. There are two academic journals devoted to the study of this topic, titled English World-Wide (since 1980) and World Englishes (since 1982). There are a number of published handbooks and textbooks on the subject. (Full article...)
    Image 1
    World Englishes is a term for emerging localized orindigenized varieties of English, especially varieties that have developed in territories influenced by theUnited Kingdom or theUnited States. The study of World Englishes consists of identifying varieties of English used in diverse sociolinguistic contexts globally and analyzing how sociolinguistic histories, multicultural backgrounds and contexts of function influence the use of English in different regions of the world.

    The issue of World Englishes was first raised in 1978 to examine concepts of regional Englishes globally. Pragmatic factors such as appropriateness, comprehensibility and interpretability justified the use of English as an international and intra-national language. In 1988, at aTeachers of English to Speakers of Other Languages (TESOL) conference inHonolulu,Hawaii, the International Committee of the Study of World Englishes (ICWE) was formed. In 1992, the ICWE formally launched the International Association for World Englishes (IAWE) at a conference of "World Englishes Today", at theUniversity of Illinois, USA. There are two academic journals devoted to the study of this topic, titledEnglish World-Wide (since 1980) andWorld Englishes (since 1982). There are a number of published handbooks and textbooks on the subject. (Full article...)
  • Image 2 The Egyptian–Hittite peace treaty, on display at the Istanbul Archaeology Museum, was for a long time believed to be the earliest example of any written international agreement of any kind. A treaty is a recorded international agreement between sovereign states or other subjects of international law (including international organizations) that is governed by international law. A treaty may also be known as an international agreement, protocol, covenant, convention, pact, or exchange of letters, among other terms; however, only documents that are legally binding on the parties are considered treaties under international law. Treaties may be bilateral (between two countries) or multilateral (involving more than two countries). International agreements were used in some form by most major civilizations and became increasingly common and more sophisticated during the early modern era. The early 19th century saw developments in diplomacy, foreign policy, and international law reflected by the widespread use of treaties. The 1969 Vienna Convention on the Law of Treaties (VCLT) codified these practices and established rules and guidelines for creating, amending, interpreting, and terminating treaties, and for resolving disputes and alleged breaches. (Full article...)
    Image 2
    TheEgyptian–Hittite peace treaty, on display at theIstanbul Archaeology Museum, was for a long time believed to be the earliest example of any written international agreement of any kind.


    Atreaty is a recorded international agreement betweensovereign states or other subjects of international law (includinginternational organizations) that is governed byinternational law. A treaty may also be known as aninternational agreement,protocol,covenant,convention,pact, orexchange of letters, among other terms; however, only documents that are legally binding on the parties are considered treaties under international law. Treaties may be bilateral (between two countries) or multilateral (involving more than two countries).

    International agreements were used in some form by most major civilizations and became increasingly common and more sophisticated during theearly modern era. The early 19th century saw developments in diplomacy, foreign policy, and international law reflected by the widespread use of treaties. The 1969Vienna Convention on the Law of Treaties (VCLT) codified these practices and established rules and guidelines for creating, amending, interpreting, and terminating treaties, and for resolving disputes and alleged breaches. (Full article...)
  • Image 3 The International Telecommunication Union (ITU) is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Union, the first formal and permanent international organization. The organization significantly predates the UN, making it the oldest UN agency. Doreen Bogdan-Martin is the Secretary-General of ITU, the first woman to serve as its head. The ITU was initially aimed at helping connect telegraphic networks between countries, with its mandate consistently broadening with the advent of new communications technologies; it adopted its current name in 1932 to reflect its expanded responsibilities over radio and the telephone. On 15 November 1947, the ITU entered into an agreement with the newly created United Nations to become a specialized agency within the UN system, which formally entered into force on 1 January 1949. (Full article...)
    Image 3

    TheInternational Telecommunication Union (ITU) is aspecialized agency of the United Nations responsible for many matters related toinformation and communication technologies. It was established on 17 May 1865 as theInternational Telegraph Union, the first formal and permanent international organization. The organization significantly predates the UN, making it the oldest UN agency.Doreen Bogdan-Martin is the Secretary-General of ITU, the first woman to serve as its head.

    The ITU was initially aimed at helping connecttelegraphic networks between countries, with its mandate consistently broadening with the advent of new communications technologies; it adopted its current name in 1932 to reflect its expanded responsibilities over radio and the telephone. On 15 November 1947, the ITU entered into an agreement with the newly createdUnited Nations to become a specialized agency within theUN system, which formally entered into force on 1 January 1949. (Full article...)
  • Image 4 A world language (sometimes called a global language or, rarely, an international language) is a language that is geographically widespread and makes it possible for members of different language communities to communicate. The term may also be used to refer to constructed international auxiliary languages. English is the foremost world language and, by some accounts, the only one. Other languages that can be considered world languages include Arabic, French, Russian, and Spanish, although there is no clear academic consensus on the subject. Some writers consider Latin to have formerly been a world language. (Full article...)
    Image 4
    Aworld language (sometimes called aglobal language or, rarely, aninternational language) is alanguage that is geographically widespread and makes it possible for members of different language communities to communicate. The term may also be used to refer toconstructedinternational auxiliary languages.

    English is the foremost world language and, by some accounts, the only one. Other languages that can be considered world languages includeArabic,French,Russian, andSpanish, although there is no clear academic consensus on the subject. Some writers considerLatin to have formerly been a world language. (Full article...)
  • Image 5 The Seal of the International Monetary Fund The International Monetary Fund (IMF) is an international financial institution and a specialized agency of the United Nations, headquartered in Washington, D.C. It consists of 191 member countries, and its stated mission is "working to foster global monetary cooperation, secure financial stability, facilitate international trade, promote high employment and sustainable economic growth, and reduce poverty around the world." The IMF acts as a lender of last resort to its members experiencing actual or potential balance of payments crises. Established in July 1944 at the Bretton Woods Conference based on the ideas of Harry Dexter White and John Maynard Keynes, the IMF came into formal existence in 1945 with 29 member countries and the goal of reconstructing the international monetary system. For its first three decades, the IMF oversaw the Bretton Woods system of fixed exchange rate arrangements. Following the collapse of this system in 1971, the Fund's role shifted to managing balance-of-payments difficulties and international financial crises, becoming a key institution in the era of globalization. (Full article...)
    Image 5

    The Seal of the International Monetary Fund

    TheInternational Monetary Fund (IMF) is aninternational financial institution and aspecialized agency of theUnited Nations, headquartered inWashington, D.C. It consists of 191 member countries, and its stated mission is "working to foster global monetary cooperation, secure financial stability, facilitateinternational trade, promote high employment and sustainable economic growth, andreduce poverty around the world." The IMF acts as alender of last resort to its members experiencing actual or potentialbalance of payments crises.

    Established in July 1944 at theBretton Woods Conference based on the ideas ofHarry Dexter White andJohn Maynard Keynes, the IMF came into formal existence in 1945 with 29 member countries and the goal of reconstructing theinternational monetary system. For its first three decades, the IMF oversaw theBretton Woods system offixed exchange rate arrangements. Following the collapse of this system in 1971, the Fund's role shifted to managing balance-of-payments difficulties and international financial crises, becoming a key institution in the era ofglobalization. (Full article...)
  • Image 6 Great powers are recognized in several international structures, including the United Nations Security Council. A great power is a sovereign state that is recognized as having the ability and expertise to exert its influence on a global scale. Great powers characteristically possess military and economic strength, as well as diplomatic and soft power influence, which may cause middle or small powers to consider the great powers' opinions before taking actions of their own. International relations theorists have posited that great power status can be characterized into power capabilities, spatial aspects, and status dimensions. While some nations are widely considered to be great powers, there is considerable debate on the exact criteria for great power status. Historically, great powers have been formally recognized as members of organizations such as the Congress of Vienna of 1814–1815 or the United Nations Security Council, of which the permanent members are China, France, Russia, the United Kingdom, and the United States. The United Nations Security Council, NATO Quint, the G7, BRICS, and the Contact Group have all been described as great power concerts. (Full article...)
    Image 6
    Great powers are recognized in several international structures, including theUnited Nations Security Council.


    Agreat power is asovereign state that is recognized as having the ability and expertise to exert its influence on a global scale. Great powers characteristically possessmilitary andeconomic strength, as well asdiplomatic andsoft power influence, which may causemiddle orsmall powers to consider the great powers' opinions before taking actions of their own.International relations theorists have posited that great power status can be characterized into power capabilities, spatial aspects, and status dimensions.

    While some nations are widely considered to be great powers, there is considerable debate on the exact criteria for great power status. Historically, great powers have been formally recognized as members of organizations such as theCongress of Vienna of 1814–1815 or theUnited Nations Security Council, of which the permanent members areChina,France,Russia, theUnited Kingdom, and theUnited States. The United Nations Security Council,NATO Quint, theG7,BRICS, and theContact Group have all been described as great power concerts. (Full article...)
  • Image 7 Sand dunes in the Rub' al Khali ("Empty quarter") of Arabia A desert is a landscape where little precipitation occurs and, consequently, living conditions create unique biomes and ecosystems. The lack of vegetation exposes the unprotected surface of the ground to denudation. About one-third of the land surface of the Earth is arid or semi-arid. This includes much of the polar regions, where little precipitation occurs, and which are sometimes called polar deserts or "cold deserts". Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by their geographical location. Deserts are formed by weathering processes as large variations in temperature between day and night strain the rocks, which consequently break in pieces. Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter, and the resulting fragments and rubble strewn over the desert floor are further eroded by the wind. This picks up particles of sand and dust, which can remain airborne for extended periods – sometimes causing the formation of sand storms or dust storms. Wind-blown sand grains striking any solid object in their path can abrade the surface. Rocks are smoothed down, and the wind sorts sand into uniform deposits. The grains end up as level sheets of sand or are piled high in billowing dunes. Other deserts are flat, stony plains where all the fine material has been blown away and the surface consists of a mosaic of smooth stones, often forming desert pavements, and little further erosion occurs. Other desert features include rock outcrops, exposed bedrock and clays once deposited by flowing water. Temporary lakes may form and salt pans may be left when waters evaporate. There may be underground water sources in the form of springs and seepages from aquifers. Where these are found, oases can occur. (Full article...)
    Image 7
    Sand dunes in theRub' al Khali ("Empty quarter") ofArabia


    Adesert is alandscape where littleprecipitation occurs and, consequently, living conditions create unique biomes and ecosystems. The lack of vegetation exposes the unprotected surface of the ground todenudation. About one-third of the land surface of the Earth isarid orsemi-arid. This includes much of thepolar regions, where little precipitation occurs, and which are sometimes calledpolar deserts or "cold deserts". Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes ofdesertification or by their geographical location.

    Deserts are formed byweathering processes as large variations in temperature between day and night strain therocks, which consequently break in pieces. Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter, and the resulting fragments and rubble strewn over the desert floor are further eroded by the wind. This picks up particles of sand and dust, which can remain airborne for extended periods – sometimes causing the formation of sand storms ordust storms. Wind-blown sand grains striking any solid object in their path can abrade the surface. Rocks are smoothed down, and the wind sorts sand into uniform deposits. The grains end up as level sheets of sand or are piled high in billowingdunes. Other deserts are flat, stonyplains where all the fine material has been blown away and the surface consists of amosaic of smooth stones, often formingdesert pavements, and little furthererosion occurs. Other desert features includerock outcrops, exposed bedrock and clays once deposited by flowing water. Temporary lakes may form andsalt pans may be left when waters evaporate. There may be underground water sources in the form of springs and seepages fromaquifers. Where these are found,oases can occur. (Full article...)

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The following are images from various world-related articles on Wikipedia.

Megacities of the world -show another

Tehran skyline and theAlborz

Tehran is thecapital and largest city ofIran. It is also the capital ofTehran province and the administrative center forTehran County and itsCentral District. With a population of around 9 million in the city, and 15 million in the metropolitan area, Tehran is themost populous city in Iran andWest Asia, thesecond largest metropolitan area in theMiddle East afterCairo, and the 24th-most-populous metropolitan area in the world.Greater Tehran includes several municipalities, including but not limited toKaraj,Eslamshahr,Shahriar,Qods,Malard,Golestan,Pakdasht,Qarchak,Nasimshahr,Parand,Pardis,Andisheh andFardis.

Inclassical antiquity, part of the territory of present-day Tehran was controlled byRhages/Rey/Ray). Modern Ray was absorbed into the metropolitan area of Greater Tehran. Tehran was 1st chosen as the capital of Iran in 1786 byAgha Mohammad Khan of theQajar dynasty, because of its proximity to Iran's territories in theCaucasus—which were contested in theRusso-Iranian Wars—and to avoid the vying factions of prior ruling Iranian dynasties; thecapital of Iran had been moved several times throughout its long history, with Tehran becoming the 32nd. Under (1848-1896), Tehran witnessed Iran's firstinstitute of higher learning,bank,railway line, and museum. Large-scale construction works began in the 1920s, and Tehran became a destination for mass migrations from all over Iran especially in the 20th century. (Full article...)

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Countries of the world -show another

Cameroon, officially theRepublic of Cameroon, is a country inCentral Africa. It shares boundaries withNigeria to the west and north,Chad to the northeast, theCentral African Republic to the east, andEquatorial Guinea,Gabon, and theRepublic of the Congo to the south. Its coastline lies on theBight of Biafra, part of theGulf of Guinea, and the Atlantic Ocean. Due to its strategic position at the crossroads betweenWest Africa andCentral Africa, it has been categorized as being in both geostrategic locations. Cameroon's population of nearly 31 million people speak 250 native languages, in addition to the national tongues of English and French. The capital city of the country isYaoundé.

Early inhabitants of the territory included theSao civilisation aroundLake Chad and theBaka hunter-gatherers in the southeastern rainforest.Portuguese explorers reached the coast in the 15th century.Fulani soldiers founded theAdamawa Emirate in the north in the 19th century, and various ethnic groups of the west and northwest established powerful chiefdoms andfondoms. (Full article...)

List of countries
From left to right, top to bottom:Chichen Itza,Christ the Redeemer, theGreat Wall of China,Machu Picchu,Petra, theTaj Mahal, and theColosseum

TheNew 7 Wonders of the World was a campaign started in 2001 to chooseWonders of the World from a selection of 200 existing monuments. The popularity poll via free web-based voting and telephone voting was led by Canadian-Swiss Bernard Weber and organized by the New 7 Wonders Foundation (N7W) based in Zurich, Switzerland, with winners announced on 7 July 2007 atEstádio da Luz inLisbon. The poll was considered unscientific partly because it was possible for people to cast multiple votes. According toJohn Zogby, founder and current President/CEO of the US polling organizationZogby International, New 7 Wonders Foundation drove "the largest poll on record".

The program drew a wide range of official reactions. Some countries touted their finalist and tried to get more votes cast for it, while others downplayed or criticized the contest. After supporting the New 7 Wonders Foundation at the beginning of the campaign by providing advice on nominee selection, the United Nations Educational, Scientific, and Cultural Organization (UNESCO), bound by its bylaws to record and give equal status to allWorld Heritage Sites, distanced itself from the undertaking in 2001 and again in 2007. (Full article...)

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    ka = kiloannum (thousand years ago);Ma = megaannum (million years ago);Ga = gigaannum (billion years ago).
    See also:Geologic time scale  • iconGeology portal  • World portal



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