Portal:World

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The world 

The world is the totality of entities, the whole of reality, or everything that exists. The nature of the world has been conceptualized differently in different fields. Some conceptions see the world as unique while others talk of a "plurality of worlds". Some treat the world as one simple object while others analyze the world as a complex made up of parts.

Inscientific cosmology, the world or universe is commonly defined as "[t]he 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". In philosophy 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. In religions, 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 a worldview. Cosmogony is the field that studies the origin or creation of the world while eschatology 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 the Earth 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 and world 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...)

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The biological and geological future of Earth can be extrapolated based on the estimated effects of several long-term influences. These include the chemistryatEarth's surface, the cooling rate of the planet's interior, the gravitational interactions with other objects in the Solar System, and a steady increase in the Sun's luminosity. An uncertain factor is the pervasive influence of technology introduced by humans, such as climate engineering, which could cause significant changes to the planet. For example, the current Holocene extinction is being caused by technology, and the effects may last for up to five million years. In turn, technology may result in the extinction of humanity, leaving the planet to gradually return to a slower evolutionary pace resulting solely from long-term natural processes.

Over time intervals of hundreds of millions of years, random celestial events pose a global risk to the biosphere, which can result in mass extinctions. These include impacts by cometsorasteroids and the possibility of a near-Earth supernova—a massive stellar explosion within a 100-light-year (31-parsec) radius of the Sun. Other large-scale geological events are more predictable. Milankovitch's theory predicts that the planet will continue to undergo glacial periods at least until the Quaternary glaciation comes to an end. These periods are caused by the variations in eccentricity, axial tilt, and precession of Earth's orbit. As part of the ongoing supercontinent cycle, plate tectonics will probably result in a supercontinent in 250–350 million years. Sometime in the next 1.5–4.5 billion years, Earth's axial tilt may begin to undergo chaotic variations, with changes in the axial tilt of up to 90°. (Full article...)

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The International Monetary Fund (IMF) is a major financial agency of the United Nations, and an international financial institution funded by 190 member countries, with headquarters in Washington, D.C. It is regarded as the global lender of last resort to national governments, and a leading supporter of exchange-rate stability. 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."

Established in 27 Dec 1945 at the Bretton Woods Conference, primarily according to the ideas of Harry Dexter White and John Maynard Keynes, it started with 29 member countries and the goal of reconstructing the international monetary system after World War II. It now plays a central role in the management of balance of payments difficulties and international financial crises. Through a quota system, countries contribute funds to a pool from which countries can borrow if they experience balance of payments problems. The IMF works to stabilize and foster the economies of its member countries by its use of the fund, as well as other activities such as gathering and analyzing economic statistics and surveillance of its members' economies. (Full article...)

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The 1881 world tour of King Kalākaua of the Hawaiian Kingdom was his attempt to save the Hawaiian culture and population from extinction by importing a labor force from Asia-Pacific nations. His efforts brought the small island nation to the attention of world leaders, but sparked rumors that the kingdom was for sale. Critics in Hawaii believed the labor negotiations were just an excuse to see the world. The 281-day trip gave Kalākaua the distinction of being the first monarch to circumnavigate the globe; his 1874 travels had made him the first reigning monarch to visit the United States and the first honoree of a state dinner at the White House. (Full article...)

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Aglobal city, also known as a power city, world city, alpha city, or world center, is a city that serves as a primary node in the global economic network. The concept originates from geography and urban studies, based on the thesis that globalization has created a hierarchy of strategic geographic locations with varying degrees of influence over finance, trade, and culture worldwide. The global city represents the most complex and significant hub within the international system, characterized by links binding it to other cities that have direct, tangible effects on global socioeconomic affairs.

The criteria of a global city have varied over time. Depending on the source, common features include a high degree of urban development, a large population, the presence of major multinational companies, a significant and globalized financial sector, a well-developed and internationally linked transportation infrastructure, local or national economic dominance, high quality educational and research institutions, and a globally influential output of ideas, innovations, or cultural products. Quintessential examples, based on most indices and research, include New York City, London, Paris, and Tokyo. (Full article...)

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The modern Olympic GamesorOlympics (French: Jeux olympiques) are the leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competitions. The Olympic Games are considered the world's foremost sports competition with more than 200 teams, representing sovereign states and territories, participating. By default, the Games generally substitute for any world championships during the year in which they take place (however, each class usually maintains its own records). The Olympic Games are held every four years. Since 1994, they have alternated between the Summer and Winter Olympics every two years during the four-year Olympiad.

Their creation was inspired by the ancient Olympic Games, held in Olympia, Greece from the 8th century BC to the 4th century AD. Baron Pierre de Coubertin founded the International Olympic Committee (IOC) in 1894, leading to the first modern Games in Athens in 1896. The IOC is the governing body of the Olympic Movement, which encompasses all entities and individuals involved in the Olympic Games. The Olympic Charter defines their structure and authority. (Full article...)

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Current Event Logo

The Vendée Globe is a single-handed (solo) non-stop round the world yacht race. The race was founded by Philippe Jeantot in 1989, and since 1992 has taken place every four years. It is named after the DépartementofVendée, in France, where the race starts and ends. The Vendée Globe is considered an extreme quest of individual endurance and the ultimate test in ocean racing. (Full article...)

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"We Are the World" is a charity single originally recorded by the supergroup USA for Africa in 1985. It was written by Michael Jackson and Lionel Richie and produced by Quincy Jones and Michael Omartian for the album We Are the World. With sales in excess of 20 million copies, it is the eighth-best-selling physical single of all time.

Soon after the British group Band Aid released "Do They Know It's Christmas?" in December 1984, musician and activist Harry Belafonte decided to create an American benefit single for African famine relief. With fundraiser Ken Kragen, he enlisted several musicians. Jackson and Richie completed the writing the night before the first recording session, on January 21, 1985. The event brought together some of the era's best-known musicians. (Full article...)

General images - load new batch

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  Image 1A 2012 artistic impression of the early Solar System's protoplanetary disk from which Earth and other Solar System bodies were formed (from Earth)
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  Image 2Hagia Sophia, Istanbul – a symbol of Byzantine civilization
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  Image 3A reconstruction of Pannotia (550 Ma). (from History of Earth)
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  Image 4Yggdrasil, an attempt to reconstruct the Norse world tree which connects the heavens, the world, and the underworld. (from World)
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  Image 5Pale orange dot, an artist's impression of Early Earth, featuring its tinted orange methane-rich early atmosphere (from Earth)
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  Image 6Battle during the 1281 Mongol invasion of Japan
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  Image 7Florence, birthplace of the Italian Renaissance
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  Image 8Standing Buddha from Gandhara, 2nd century CE
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  Image 9Ming dynasty section, Great Wall of China
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  Image 10Conjectured illustration of the scorched Earth after the Sun has entered the red giant phase, about 5–7 billion years from now (from Earth)
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  Image 11Angkor Wat temple complex, Cambodia, early 12th century
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  Image 12Fall of the Berlin Wall, 1989
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  Image 13A schematic view of Earth's magnetosphere with solar wind flowing from left to right (from Earth)
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  Image 14Pangaea was a supercontinent that existed from about 300 to 180 Ma. The outlines of the modern continents and other landmasses are indicated on this map. (from History of Earth)
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  Image 15A composite image of artificial light emissions at night on a map of Earth (from Earth)
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  Image 16Japanese depiction of a Portuguese carrack. European maritime innovations led to proto-globalization.
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  Image 17Earth's land use for human agriculture in 2019 (from Earth)
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  Image 18Chloroplasts in the cells of a moss (from History of Earth)
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  Image 19Shanghai. China urbanized rapidly in the 21st century.
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  Image 20Astronaut Buzz Aldrin on the Moon, photographed by Neil Armstrong, 1969 (from History of Earth)
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  Image 21Exaggerated illustration of Earth's elliptical orbit around the Sun, marking that the orbital extreme points (apoapsis and periapsis) are not the same as the four seasonal extreme points, the equinox and solstice (from Earth)
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  Image 22A pillar at Göbekli Tepe
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  Image 23AHigh Desert storm in the Mojave (from Earth)
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  Image 24Chennakesava Temple, Belur, India
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  Image 25Earth's western hemisphere showing topography relative to Earth's center instead of to mean sea level, as in common topographic maps (from Earth)
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  Image 26St. Peter's Basilica, Vatican City
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  Image 27Moai, Easter Island (from Human history)
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  Image 28Tracy Caldwell Dyson, a NASA astronaut, observing Earth from the Cupola module at the International Space Station on 11 September 2010 (from Earth)
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  Image 29An animation of the changing density of productive vegetation on land (low in brown; heavy in dark green) and phytoplankton at the ocean surface (low in purple; high in yellow) (from Earth)
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  Image 30An artist's impression of the Archean, the eon after Earth's formation, featuring round stromatolites, which are early oxygen-producing forms of life from billions of years ago. After the Late Heavy Bombardment, Earth's crust had cooled, its water-rich barren surface is marked by continents and volcanoes, with the Moon still orbiting Earth half as far as it is today, appearing 2.8 times larger and producing strong tides. (from Earth)
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  Image 31Lithified stromatolites on the shores of Lake Thetis, Western Australia. Archean stromatolites are the first direct fossil traces of life on Earth. (from History of Earth)
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  Image 32Artist's conception of Hadean Eon Earth, when it was much hotter and inhospitable to all forms of life. (from History of Earth)
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  Image 33Acomposite image of Earth, with its different types of surface discernible: Earth's surface dominating Ocean (blue), Africa with lush (green) to dry (brown) land and Earth's polar ice in the form of Antarctic sea ice (grey) covering the Antarctic or Southern Ocean and the Antarctic ice sheet (white) covering Antarctica. (from Earth)
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  Image 34Great Pyramids of Giza, Egypt
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  Image 35Scientific worldview. (from World)
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  Image 36Satellite time lapse imagery of Earth's rotation showing axis tilt (from Earth)
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  Image 37First airplane, the Wright Flyer, flew on 17 December 1903.
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  Image 38Vitruvian ManbyLeonardo da Vinci epitomizes the advances in art and science seen during the Renaissance. (from History of Earth)
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  Image 39Earth and the Moon as seen from Mars by the Mars Reconnaissance Orbiter (from Earth)
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  Image 40View of Earth from the Moon by the Lunar Reconnaissance Orbiter (from Earth)
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  Image 41An artist's impression of ice age Earth at glacial maximum. (from History of Earth)
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  Image 42Persepolis, Achaemenid Empire, 6th century BCE
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  Image 43Tiktaalik, a fish with limb-like fins and a predecessor of tetrapods. Reconstruction from fossils about 375 million years old. (from History of Earth)
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  Image 44A reconstruction of human history based on fossil data. (from History of Earth)
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  Image 45Trilobites first appeared during the Cambrian period and were among the most widespread and diverse groups of Paleozoic organisms. (from History of Earth)
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  Image 46The replicator in virtually all known life is deoxyribonucleic acid. DNA is far more complex than the original replicator and its replication systems are highly elaborate. (from History of Earth)
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  Image 47Atomic bombing of Nagasaki, 1945
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  Image 48Graph showing range of estimated partial pressure of atmospheric oxygen through geologic time (from History of Earth)
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  Image 49Earth's night-side upper atmosphere appearing from the bottom as bands of afterglow illuminating the troposphere in orange with silhouettes of clouds, and the stratosphere in white and blue. Next the mesosphere (pink area) extends to the orange and faintly green line of the lowest airglow, at about one hundred kilometers at the edge of space and the lower edge of the thermosphere (invisible). Continuing with green and red bands of aurorae stretching over several hundred kilometers. (from Earth)
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  Image 50A map of heat flow from Earth's interior to the surface of Earth's crust, mostly along the oceanic ridges (from Earth)
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  Image 51Earth's major plates, which are:

  •   Pacific Plate
•   African Plate
•   North American Plate
•   Eurasian Plate
•   Antarctic Plate
•   Indo-Australian Plate
•   South American Plate

Image 52Taj Mahal, Mughal Empire, India

Image 53Pillar erected by India's Maurya Emperor Ashoka

Image 54Cross-section through a liposome (from History of Earth)

Image 55Earth's axial tilt causing different angles of seasonal illumination at different orbital positions around the Sun (from Earth)

Image 56Empires of the world in 1898

Image 57Geologic map of North America, color-coded by age. From most recent to oldest, age is indicated by yellow, green, blue, and red. The reds and pinks indicate rock from the Archean.

Image 58Ajloun Castle, Jordan

Image 59The pale orange dot, an artist's impression of the early Earth which might have appeared orange through its hazy methane rich prebiotic second atmosphere. Earth's atmosphere at this stage was somewhat comparable to today's atmosphere of Titan. (from History of Earth)

Image 60A 580 million year old fossil of Spriggina floundensi, an animal from the Ediacaran period. Such life forms could have been ancestors to the many new forms that originated in the Cambrian Explosion. (from History of Earth)

Image 61Earth's history with time-spans of the eons to scale (from History of Earth)

Image 62Last Moon landing: Apollo 17 (1972)

Image 63Benin Bronze head from Nigeria

Image 64Great Mosque of Kairouan, Tunisia, founded 670 CE

Image 65A view of Earth with its global ocean and cloud cover, which dominate Earth's surface and hydrosphere; at Earth's polar regions, its hydrosphere forms larger areas of ice cover. (from Earth)

Image 66Abanded iron formation from the 3.15 GaMoodies Group, Barberton Greenstone Belt, South Africa. Red layers represent the times when oxygen was available; gray layers were formed in anoxic circumstances. (from History of Earth)

Image 67Artist's impression of Earth during the later Archean, the largely cooled planetary crust and water-rich barren surface, marked by volcanoes and continents, features already round microbialites. The Moon, still orbiting Earth much closer than today and still dominating Earth's sky, produced strong tides. (from History of Earth)

Image 68Dinosaurs were the dominant terrestrial vertebrates throughout most of the Mesozoic (from History of Earth)

Image 69Artist's impression of the enormous collision that probably formed the Moon (from History of Earth)

Image 70James Watt's steam engine powered the Industrial Revolution.

Image 71Change in average surface air temperature and drivers for that change. Human activity has caused increased temperatures, with natural forces adding some variability. (from Earth)

Image 72"Lucy", the first Australopithecus afarensis skeleton found, was only 1.06 m (3 ft 6 in) tall.

Image 73Obelisk of Axum, Ethiopia

Image 74Artist's impression of a Hadean landscape with the relatively newly formed Moon still looming closely over Earth and both bodies sustaining strong volcanism. (from History of Earth)

Image 75Cuneiform inscription, Sumer, Mesopotamia, 26th century BCE

Image 76Artist's rendition of an oxinated fully-frozen Snowball Earth with no remaining liquid surface water. (from History of Earth)

Image 77Wittenberg, birthplace of Protestantism (from Human history)

Image 78A view of Earth with different layers of its atmosphere visible: the troposphere with its clouds casting shadows, a band of stratospheric blue sky at the horizon, and a line of green airglow of the lower thermosphere around an altitude of 100 km, at the edge of space (from Earth)

Image 79ReliefofEarth's crust (from Earth)

Image 80Image of the physical world, captured by the Hubble Space Telescope (from World)

Image 81Peopling of the world, the Southern Dispersal scenario

Image 82Artist's conception of Devonian flora (from History of Earth)

Image 83Olmec colossal head, now at the Museo de Antropología de Xalapa

Image 84An artist's rendering of a protoplanetary disk (from History of Earth)

Image 85Machu Picchu, Inca Empire, Peru

Image 86A computer-generated image mapping the prevalence of artificial satellites and space debris around Earth in geosynchronous and low Earth orbit (from Earth)

Image 87Maya observatory, Chichen Itza, Mexico

Image 88Notre-Dame de Paris, France

Megacities of the world - show another

Haicang Bridge

Xiamen is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Strait. It is divided into six districts: Huli, Siming, Jimei, Tong'an, Haicang, and Xiang'an. All together, these cover an area of 1,700.61 square kilometers (656.61 sq mi) with a population of 5,163,970 as of 2020 and estimated at 5.308 million as of 31 December 2022. The urbanized area of the city has spread from its original island to include most parts of all six of its districts, as well as 4 Zhangzhou districts (Xiangcheng, Longwen, Longhai and Changtai), which form a built-up area of 7,284,148 inhabitants. This area also connects with Quanzhou in the north, making up a metropolis of nearly ten million people. The Kinmen Islands (Quemoy) administered by the Republic of China (Taiwan) lie less than 6 kilometers (4 mi) away separated by Xiamen Bay. As part of the Opening Up Policy under Deng Xiaoping, Xiamen became one of China's original four special economic zones opened to foreign investment and trade in the early 1980s.

• ... that the 1849 painting The Stone Breakers, by French artist Gustave Courbet, was destroyed in 1945 during a bombing raid by the Allies of World War II?

Countries of the world - show another

Denmark (Danish: Danmark, pronounced [ˈtænmɑk] ^ⓘ) is a Nordic country in the south-central portion of Northern Europe. It is the metropolitan part of and the most populous constituent of the Kingdom of Denmark, a constitutionally unitary state that includes the autonomous territories of the Faroe Islands and Greenland in the North Atlantic Ocean. Metropolitan Denmark is the southernmost of the Scandinavian countries, lying south-west and south of Sweden, south of Norway, and north of Germany, with which it shares a short border.

Wonders of the World - show another

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This is a list of protected areasinBelize. (Full article...)

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There are numerous protected areas in Belgium with a wide variety of types, protection levels and sizes. The below list gives an overview of the most important protected areas. (Full article...)

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This is a list of protected areasofSaudi Arabia, some of which are managed by the Saudi Wildlife Authority.:

• At-Taysiyah Protected Area

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A list of protected areasofYemen:

• Bura Community Protected Area
  

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Protected areas of Tasmania consist of protected areas located within Tasmania and its immediate onshore waters, including Macquarie Island. It includes areas of crown land (withheld land) managed by Tasmanian Government agencies as well as private reserves. As of 2016, 52% of Tasmania's land area has some form of reservation classification, the majority is managed by the Tasmania Parks & Wildlife Service (about 42% of total Tasmanian land area). Marine protected areas cover about 7.9% of state waters.

Within each classification of reserve there may be a variation of IUCN categories Australia is a signatory to the Convention of Biological Diversity and as such has obligations to report the status of its National Reserve System.IUCN provides on its website a prescription for activities consistent with the categorisation system. Changes made to the Nature Conservation Act 2002 in 2014 permit timber harvesting. These changes made in addition to the already established right to access minerals means that many of the IUCN categorisations assigned to individual reserves in Tasmania are no longer fit for purpose. In addition many reserves have had their reserve status downgraded from a class excluding timber harvesting and mineral extraction to ones where these activities are now permitted. This mis-application of the IUCN protected area categories needs to be remedied or the reserves protected land class under the Nature Conservation Act 2002 should be adjusted to reflect its currently assigned IUCN category. (Full article...)

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Protected areas of Libya include any geographical area protected for a specific use.

Most protected areas are intended for the conservation of flora and fauna. Libya's national parks and nature reserves are maintained by the "Technical Committee of Wildlife and National Parks" which was created in 1990, as part of the General Secretariat of Agricultural Reclamation and Land Reform. (Full article...)

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The following is a list of protected areas of Burkina Faso. (Full article...)

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There are numerous parks throughout the sovereign island country of Singapore. This is a list of parks in Singapore that are currently existing and have articles on Wikipedia. Most parks in Singapore are managed by the National Parks Board, although smaller neighbourhood parks are managed by the Housing Development Board. Most of these parks are connected via the Park Connector Network (PCN). (Full article...)

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This is a list of protected areas of Alberta. Protected areas are managed by the Government of Canada or the Government of Alberta. The provincial government owns 60% of Alberta's landmass but most of this has not been formally protected. The total protected area throughout Alberta including federal and provincial protected areas is approximately 90,700 km² (35,000 sq mi). (Full article...)

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Protected areas of Norway include:

• National parks of Norway

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Canada's National Parks and National Reserves by provinces and territories

This is a list of protected areas of Newfoundland and Labrador. (Full article...)

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The protected areas of Kerala include a wide range of biomes, extending east from the coral reefs, estuaries, salt marshes, mangroves beaches of the Arabian Sea through the tropical moist broadleaf forests of the Malabar Coast moist forests to the North Western Ghats moist deciduous forests and South Western Ghats moist deciduous foreststoSouth Western Ghats montane rain forests on the western border of Tamil Nadu in the Western Ghats. Most protected areas throughout its 14 districts are under the stewardship of the Kerala Forest Department and like all other protected areas of India receive support from the Ministry of Environment and Forests (India). (Full article...)

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The Australian Capital Territory as of 2014 contains 46 separate protected areas with a total land area of 1,302 km² (503 sq mi) or 55.5% of the territory's area, and which managed by Territory and Municipal Services of the ACT government: (Full article...)

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The protected areas of Nepal cover mainly forested land and are located at various altitudes in the Terai, in the foothills of the Himalayas and in the mountains, thus encompassing a multitude of landscapes and preserving a vast biodiversity in the Palearctic and Indomalayan realms.
Nepal covers 147,181 km² (56,827 sq mi) in the central part of the Himalayas. Altitudes range from 67 m (220 ft) in the south-eastern Terai to 8,848 m (29,029 ft) at Mount Everest within a short horizontal span. This extreme altitudinal gradient has resulted in 11 bio-climatic zones ranging from lower tropical below 500 m (1,600 ft) to nival above 5,000 m (16,000 ft) in the High Himalayas, encompassing nine terrestrial ecoregions with 36 vegetation types.

Additionally, nine Ramsar sites were declared between 1988 and 2008. Two wildlife reserves were declared as national parks in 2017. (Full article...)

Selected world maps

Image 2Index map from the International Map of the World (1:1,000,000 scale)

Image 3The world map by Gerardus Mercator (1569), the first map in the well-known Mercator projection

Image 4Mollweide projection of the world

Image 5United Nations Human Development Index map by country (2016)

Image 6The Goode homolosine projection is a pseudocylindrical, equal-area, composite map projection used for world maps.

Image 7Time zones of the world

Image 81516 map of the world by Martin Waldseemüller

Image 9Aplate tectonics map with volcano locations indicated with red circles

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