The Blue Marble, a photograph of the planet Earth made on 7 December 1972 by the crew of the Apollo 17 spacecraft.
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.
In scientific 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
United Nations Conference on Environment and Development (UNCED), informally known as the Earth Summit, held in Rio de Janeiro. The treaty entered into force on 21 March 1994. "UNFCCC" is also the name of the Secretariat charged with supporting the operation of the convention, with offices on the UN Campus in Bonn, Germany.
The convention's main objective is explained in Article 2. It is the "stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic [i.e., human-caused] interference with the climate system". The treaty calls for continuing scientific research into the climate. This research supports meetings and negotiations to lead to agreements. The aim is to allow ecosystems to adapt to climate change. At the same time it aims to ensure there are no threats to food production from climate change or measures to address it. And it aims to enable economic development to proceed in a sustainable manner. (Full article...
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smartphones, have been major factors in globalization and have generated further interdependence of economic and cultural activities around the globe. (Full article...
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religious traditions and myths, located below the world of the living. Chthonic is the technical adjective for things of the underworld.
The concept of an underworld is found in almost every civilization and "may be as old as humanity itself". Common features of underworld myths are accounts of living people making journeys to the underworld, often for some heroic purpose. Other myths reinforce traditions that the entrance of souls to the underworld requires a proper observation of ceremony, such as the ancient Greek story of the recently dead Patroclus haunting Achilles until his body could be properly buried for this purpose. People with high social status were dressed and equipped in order to better navigate the underworld. (Full article...
An oryx in the Wildlife Reserve in Al Wusta in 2012. The reserve was formerly the Arabian Oryx Sanctuary, a UNESCO World Heritage Site that was delisted in 2007. World Heritage Sites may lose their designation when the UNESCOWorld Heritage Committee determines that they are not properly managed or protected. The committee can place a site it is concerned about on its list of World Heritage in Danger of losing its designation, and attempts to negotiate with the local authorities to remedy the situation. If remediation fails, the committee then revokes its designation.
A country may also request to reduce the boundaries of one of its existing sites, in effect partially or fully delisting such properties. Under the World Heritage guidelines, a country must report to the committee whenever one of its properties "inscribed on the World Heritage List has seriously deteriorated, or when the necessary corrective measures have not been taken." (Full article...)
ocean surface (low in purple; high in yellow) (from Earth
)
Image 4Artist'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 roundmicrobialites. The Moon, still orbiting Earth much closer than today and still dominating Earth's sky, produced strong tides. (from History of Earth)
Image 5Japanese depiction of a Portuguese carrack. European maritime innovations led to proto-globalization.
Image 9An 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)
Image 11Earth's western hemisphere showing topography relative to Earth's center instead of to
mean sea level, as in common topographic maps (from Earth
)
Image 12Earth's land use for human agriculture in 2019 (from Earth)
Image 13Geologic 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 17Angkor Wat temple complex, Cambodia, early 12th century
Image 18Exaggerated illustration of Earth's elliptical orbit around the Sun, marking that the orbital extreme points (
periapsis) are not the same as the four seasonal extreme points, the equinox and solstice (from Earth
)
Image 19Tiktaalik, a fish with limb-like fins and a predecessor of tetrapods. Reconstruction from fossils about 375 million years old. (from History of Earth)
Image 22Earth's axial tilt causing different angles of seasonal illumination at different orbital positions around the Sun (from Earth)
Image 23Artist's conception of
Hadean Eon Earth, when it was much hotter and inhospitable to all forms of life. (from History of Earth
)
Image 24Artist'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 27Artist's rendition of an oxinated fully-frozen Snowball Earth with no remaining liquid surface water. (from History of Earth)
Image 28Earth'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)
Image 29Empires of the world in 1898
Image 30The 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
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
Trilobites first appeared during the Cambrian period and were among the most widespread and diverse groups of Paleozoic organisms. (from History of Earth
Image 62Pangaea 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)
Image 75A 2012 artistic impression of the early Solar System's protoplanetary disk from which Earth and other Solar System bodies were formed (from Earth)
Image 76Pillar erected by India's Maurya Emperor Ashoka
Image 87Change in average surface air temperature and drivers for that change. Human activity has caused increased temperatures, with natural forces adding some variability. (from Earth)
) . Karachi is a metropolitan city and is considered Pakistan's most cosmopolitan city, and among the country's most linguistically, ethnically-, and religiously-diverse regions, as well as one of the country's most progressive and socially liberal cities.
The region has been inhabited for millennia, but the city was formally founded as the fortified village of Kolachi as recently as 1729. The settlement greatly increased in importance with the arrival of the
Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north and Austria and Liechtenstein to the east. Switzerland is geographically divided among the Swiss Plateau, the Alps and the Jura; the Alps occupy the greater part of the territory, whereas most of the country's population of 9 million are concentrated on the plateau, which hosts its largest cities and economic centres, including Zürich, Geneva, and Basel.
The Seven Wonders of Wales (Welsh: Saith Rhyfeddod Cymru) is a traditional list of notable landmarks in north Wales, commemorated in an anonymously written rhyme:
The rhyme is usually supposed to have been written sometime in the late 18th or early 19th century by an English visitor to North Wales. The specific number of wonders may have varied over the years: the antiquary Daines Barrington, in a letter written in 1770, refers to Llangollen Bridge as one of the "five wonders of Wales, though like the seven wonders of Dauphiny, they turn out to be no wonders at all out of the Principality". (Full article...)
Queensland is the second-largest state in Australia. As at 2020, it contained more than 1,000 protected areas. In August 2023, it was estimated a total of 14.5 million hectares or 8.38% of Queensland's landmass was protected. (Full article...)
World Heritage Sites, can cover both categories of site.
The various designations overlap considerably with many protected areas being covered by multiple designations with different boundaries. (Full article...
Ministry of the Environment and Natural Resources (MARENA). (Full article...
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Part of the Brecon Beacons National Park, looking from the highest point of Pen y Fan (886 m/2907 feet) to Cribyn (795 m/2608 feet). Protected areas of the United Kingdom are areas in the United Kingdom which need and /or receive protection because of their environmental, historical or cultural value to the nation. Methods and aims of protection vary depending on the nature and importance of the resource. Protection operates at local, regional, national and international levels, and may be backed by legislation and international treaty, or less formally by planning policy.
Within the United Kingdom, different approaches are taken to some forms of protection within the constituent countries of England, Scotland, Wales and Northern Ireland, while other forms of protection are more consistent across the UK. Protected areas can be divided according to the type of resource which each seeks to protect. Primarily, these are: scenic or landscape value; biodiversity value (species and habitats); geodiversity value (relating to geology and geomorphology); and cultural or historic value. Several types of protected areas are focused on more than one of these areas. (Full article...)
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National parks of Norway
About 17 percent of the mainland of Norway is protected. Of this, ca. 8.3 percent is national parks, 1.3 percent is nature reserves and 4.7 percent otherwise protected. (Full article...
Meanwhile, the central government has proclaimed the Coastline and the Tirana Greenbelt as areas of national importance. (Full article...
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Total size of protected area of Bosnia and Herzegovina amounts of 57.83694 hectares (142.9182 acres), which is 1,13% of its entire territory. This is a list of areas protected by corresponding levels of the government of Bosnia and Herzegovina, namely at the entity's levels, and with various categorizations. (Full article...)
![Image 1 The United Nations Framework Convention on Climate Change (UNFCCC) is the UN process for negotiating an agreement to limit dangerous climate change. It is an international treaty among countries to combat "dangerous human interference with the climate system". The main way to do this is limiting the increase in greenhouse gases in the atmosphere. It was signed in 1992 by 154 states at the United Nations Conference on Environment and Development (UNCED), informally known as the Earth Summit, held in Rio de Janeiro. The treaty entered into force on 21 March 1994. "UNFCCC" is also the name of the Secretariat charged with supporting the operation of the convention, with offices on the UN Campus in Bonn, Germany. The convention's main objective is explained in Article 2. It is the "stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic [i.e., human-caused] interference with the climate system". The treaty calls for continuing scientific research into the climate. This research supports meetings and negotiations to lead to agreements. The aim is to allow ecosystems to adapt to climate change. At the same time it aims to ensure there are no threats to food production from climate change or measures to address it. And it aims to enable economic development to proceed in a sustainable manner. (Full article...)](//upload.wikimedia.org/wikipedia/en/d/d2/Blank.png)
United Nations Conference on Environment and Development (UNCED), informally known as the Earth Summit, held in Rio de Janeiro. The treaty entered into force on 21 March 1994. "UNFCCC" is also the name of the Secretariat charged with supporting the operation of the convention, with offices on the UN Campus in Bonn, Germany.)
![Image 1 The United Nations Framework Convention on Climate Change (UNFCCC) is the UN process for negotiating an agreement to limit dangerous climate change. It is an international treaty among countries to combat "dangerous human interference with the climate system". The main way to do this is limiting the increase in greenhouse gases in the atmosphere. It was signed in 1992 by 154 states at the United Nations Conference on Environment and Development (UNCED), informally known as the Earth Summit, held in Rio de Janeiro. The treaty entered into force on 21 March 1994. "UNFCCC" is also the name of the Secretariat charged with supporting the operation of the convention, with offices on the UN Campus in Bonn, Germany. The convention's main objective is explained in Article 2. It is the "stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic [i.e., human-caused] interference with the climate system". The treaty calls for continuing scientific research into the climate. This research supports meetings and negotiations to lead to agreements. The aim is to allow ecosystems to adapt to climate change. At the same time it aims to ensure there are no threats to food production from climate change or measures to address it. And it aims to enable economic development to proceed in a sustainable manner. (Full article...)](/File:Blank.png)
Peopling of the world, the Southern Dispersal scenario
An animation of the changing density ofocean surface (low in purple; high in yellow) (from Earth)
Artist'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)
Japanese depiction of a Portuguese carrack. European maritime innovations led to proto-globalization.
Florence, birthplace of the Italian Renaissance
Vitruvian Man by Leonardo da Vinci epitomizes the advances in art and science seen during the Renaissance. (from History of Earth)
Battle during the 1281 Mongol invasion of Japan
Earth's western hemisphere showing topography relative to Earth's center instead of tomean sea level, as in common topographic maps (from Earth)
Earth's land use for human agriculture in 2019 (from Earth)
Geologic 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.
Taj Mahal, Mughal Empire, India
Angkor Wat temple complex, Cambodia, early 12th century
Tiktaalik, a fish with limb-like fins and a predecessor of tetrapods. Reconstruction from fossils about 375 million years old. (from History of Earth)
A composite image of artificial light emissions at night on a map of Earth (from Earth)
Machu Picchu, Inca Empire, Peru
Earth's axial tilt causing different angles of seasonal illumination at different orbital positions around the Sun (from Earth)
Artist's conception ofHadean Eon Earth, when it was much hotter and inhospitable to all forms of life. (from History of Earth)
Artist'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)
Ajloun Castle, Jordan
Lithified 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)
Artist's rendition of an oxinated fully-frozen Snowball Earth with no remaining liquid surface water. (from History of Earth)
Earth'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)
Empires of the world in 1898
The replicator in virtually all known life isdeoxyribonucleic acid. DNA is far more complex than the original replicator and its replication systems are highly elaborate. (from History of Earth)
Last Moon landing: Apollo 17 (1972)
Graph showing range of estimated partial pressure of atmospheric oxygen through geologic time (from History of Earth)
A reconstruction of Pannotia (550 Ma). (from History of Earth)
Benin Bronze head from Nigeria
A view of Earth with itsglobal 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)
Artist's impression of the enormous collision that probably formed the Moon (from History of Earth)
Shanghai. China urbanized rapidly in the 21st century.
Image of the physical world, captured by the Hubble Space Telescope (from World)
A map ofoceanic ridges (from Earth)
A schematic view of Earth's magnetosphere with solar wind flowing from left to right (from Earth)
An artist's rendering of a protoplanetary disk (from History of Earth)
An artist's impression of ice age Earth at glacial maximum. (from History of Earth)
A 580 million year old fossil ofCambrian Explosion. (from History of Earth)
Standing Buddha from Gandhara, 2nd century CE
Trilobites first appeared during the Cambrian period and were among the most widespread and diverse groups of Paleozoic organisms. (from History of Earth)
Byzantine civilization
Fall of the Berlin Wall, 1989
Chloroplasts in the cells of a moss (from History of Earth)
"Lucy", the first Australopithecus afarensis skeleton found, was only 1.06 m (3 ft 6 in) tall.
Dinosaurs were the dominant terrestrial vertebrates throughout most of the Mesozoic (from History of Earth)
Yggdrasil, an attempt to reconstruct the Norse world tree which connects the heavens, the world, and the underworld. (from World)
Persepolis, Achaemenid Empire, 6th century BCE
A view of Earth with different layers of its atmosphere visible: thestratospheric 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)
First airplane, the Wright Flyer, flew on 17 December 1903.
Earth's history with time-spans of the eons to scale (from History of Earth)
Chennakesava Temple, Belur, India
Pangaea 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)
Tracy Caldwell Dyson, a NASA astronaut, observing Earth from the Cupola module at the International Space Station on 11 September 2010 (from Earth)
Notre-Dame de Paris, France
Great Pyramids of Giza, Egypt
Great Mosque of Kairouan, Tunisia, founded 670 CE
Obelisk of Axum, Ethiopia
Olmec colossal head, now at the Museo de Antropología de Xalapa
A computer-generated image mapping the prevalence ofartificial satellites and space debris around Earth in geosynchronous and low Earth orbit (from Earth)
Ming dynasty section, Great Wall of China
A 2012 artistic impression of the early Solar System's protoplanetary disk from which Earth and other Solar System bodies were formed (from Earth)
A banded iron formation from the 3.15 Ga Moodies 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)
Satellite time lapse imagery of Earth's rotation showing axis tilt (from Earth)
Pale orange dot, an artist's impression of Early Earth, featuring its tinted orange methane-rich early atmosphere (from Earth)
Cross-section through a liposome (from History of Earth)
A pillar at Göbekli Tepe
A reconstruction of human history based on fossil data. (from History of Earth)
Artist's conception of Devonian flora (from History of Earth)
A composite 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)
Change in average surface air temperature and drivers for that change. Human activity has caused increased temperatures, with natural forces adding some variability. (from Earth)
View of Earth from the Moon by the Lunar Reconnaissance Orbiter (from Earth)
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The Goode homolosine projection is a pseudocylindrical, equal-area, composite map projection used for world maps.
A plate tectonics map with volcano locations indicated with red circles
The world map by Gerardus Mercator (1569), the first map in the well-known Mercator projection
United Nations Human Development Index map by country (2016)
Only a few of the largestlarge igneous provinces appear (coloured dark purple) on this geological map, which depicts crustal geologic provinces as seen in seismic refractiondata
Index map from the International Map of the World (1:1,000,000 scale)
1516 map of the world by Martin Waldseemüller
Time zones of the world
Mollweide projection of the world
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