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The World Portal

The world 

The world 


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.

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...)

Refresh with new selections below (purge)

Examples of the multicellular biodiversity of the Earth.

Global biodiversity is the measure of biodiversity on planet Earth and is defined as the total variability of life forms. More than 99 percent of all species that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 2 million to 1 trillion, but most estimates are around 11 million species or fewer. About 1.74 million species were databased as of 2018, and over 80 percent have not yet been described. The total amount of DNA base pairs on Earth, as a possible approximation of global biodiversity, is estimated at 5.0 x 1037, and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as 4 TtC (trillion tons of carbon).

In other related studies, around 1.9 million extant species are believed to have been described currently, but some scientists believe 20% are synonyms, reducing the total valid described species to 1.5 million. In 2013, a study published in Science estimated there to be 5 ± 3 million extant species on Earth although that is disputed. Another study, published in 2011 by PLoS Biology, estimated there to be 8.7 million ± 1.3 million eukaryotic species on Earth. Some 250,000 valid fossil species have been described, but this is believed to be a small proportion of all species that have ever lived. (Full article...)

  • Image 2 The rocky side of a mountain creek in Costa Rica Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere, hydrosphere/cryosphere, atmosphere, and geosphere (or lithosphere). Earth science can be considered to be a branch of planetary science but with a much older history. (Full article...)

    The rocky side of a mountain creek in Costa Rica


    Earth scienceorgeoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere, hydrosphere/cryosphere, atmosphere, and geosphere (orlithosphere). Earth science can be considered to be a branch of planetary science but with a much older history. (Full article...)

  • Image 3 The Global Climate Observing System (GCOS) was established in 1992 as an outcome of the Second World Climate Conference, to ensure that the observations and information needed to address climate-related issues are obtained and made available to all potential users. The GCOS is co-sponsored by the World Meteorological Organization (WMO), the Intergovernmental Oceanographic Commission (IOC) of UNESCO, the United Nations Environment Programme (UNEP), and the International Council for Science (ICSU). In order to assess and monitor the adequacy of in-situ observation networks as well as satellite-based observing systems, GCOS regularly reports on the adequacy of the current climate observing system to the United Nations Framework Convention on Climate Change (UNFCCC), and thereby identifies the needs of the current climate observing system. GCOS is a system that comprises the climate-relevant components of many contributing observing systems and networks. Its mission is to help ensure that these contributing systems, taken as a whole, provide the comprehensive information on the global climate system that is required by users, including individuals, national and international organizations, institutions and agencies. The programme promotes the sustained provision and availability of reliable physical, chemical and biological observations and data records for the total climate system - across the atmospheric, oceanic and terrestrial domains, including the hydrological cycle, the carbon cycle and the cryosphere. (Full article...)

    The Global Climate Observing System (GCOS) was established in 1992 as an outcome of the Second World Climate Conference, to ensure that the observations and information needed to address climate-related issues are obtained and made available to all potential users. The GCOS is co-sponsored by the World Meteorological Organization (WMO), the Intergovernmental Oceanographic Commission (IOC) of UNESCO, the United Nations Environment Programme (UNEP), and the International Council for Science (ICSU). In order to assess and monitor the adequacy of in-situ observation networks as well as satellite-based observing systems, GCOS regularly reports on the adequacy of the current climate observing system to the United Nations Framework Convention on Climate Change (UNFCCC), and thereby identifies the needs of the current climate observing system.

    GCOS is a system that comprises the climate-relevant components of many contributing observing systems and networks. Its mission is to help ensure that these contributing systems, taken as a whole, provide the comprehensive information on the global climate system that is required by users, including individuals, national and international organizations, institutions and agencies. The programme promotes the sustained provision and availability of reliable physical, chemical and biological observations and data records for the total climate system - across the atmospheric, oceanic and terrestrial domains, including the hydrological cycle, the carbon cycle and the cryosphere. (Full article...)

  • Image 4 United States Army infantry supported by a M18 tank destroyer advancing through an enemy-occupied town during World War II, the most recent conflict to widely be considered a "world war" A world war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World War I (1914–1918) and World War II (1939–1945), although some historians have also characterised other global conflicts as world wars, such as the Nine Years' War, the War of the Spanish Succession, the Seven Years' War, the French Revolutionary and Napoleonic Wars, the Cold War, and the War on Terror. (Full article...)

    United States Army infantry supported by a M18 tank destroyer advancing through an enemy-occupied town during World War II, the most recent conflict to widely be considered a "world war"

    Aworld war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World War I (1914–1918) and World War II (1939–1945), although some historians have also characterised other global conflicts as world wars, such as the Nine Years' War, the War of the Spanish Succession, the Seven Years' War, the French Revolutionary and Napoleonic Wars, the Cold War, and the War on Terror. (Full article...)

  • Image 5 A world map on the Winkel tripel projection, a low-error map projection adopted by the National Geographic Society for reference maps A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map. Many techniques have been developed to present world maps that address diverse technical and aesthetic goals. Charting a world map requires global knowledge of the Earth, its oceans, and its continents. From prehistory through the Middle Ages, creating an accurate world map would have been impossible because less than half of Earth's coastlines and only a small fraction of its continental interiors were known to any culture. With exploration that began during the European Renaissance, knowledge of the Earth's surface accumulated rapidly, such that most of the world's coastlines had been mapped, at least roughly, by the mid-1700s and the continental interiors by the twentieth century. (Full article...)

    A world map on the Winkel tripel projection,
    a low-error map projection adopted by the National Geographic Society for reference maps

    Aworld map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the Earth. While this is true of any map, these distortions reach extremes in a world map. Many techniques have been developed to present world maps that address diverse technical and aesthetic goals.

    Charting a world map requires global knowledge of the Earth, its oceans, and its continents. From prehistory through the Middle Ages, creating an accurate world map would have been impossible because less than half of Earth's coastlines and only a small fraction of its continental interiors were known to any culture. With exploration that began during the European Renaissance, knowledge of the Earth's surface accumulated rapidly, such that most of the world's coastlines had been mapped, at least roughly, by the mid-1700s and the continental interiors by the twentieth century. (Full article...)

  • Image 6 IDA logo The International Development Association (IDA) (French: Association internationale de développement) is a development finance institution which offers concessional loans and grants to the world's poorest developing countries. The IDA is a member of the World Bank Group and is headquartered in Washington, D.C. in the United States. It was established in 1960 to complement the existing International Bank for Reconstruction and Development by lending to developing countries which suffer from the lowest gross national income, from troubled creditworthiness, or from the lowest per capita income. Together, the International Development Association and International Bank for Reconstruction and Development are collectively generally known as the World Bank, as they follow the same executive leadership and operate with the same staff. The association shares the World Bank's mission of reducing poverty and aims to provide affordable development financing to countries whose credit risk is so prohibitive that they cannot afford to borrow commercially or from the Bank's other programs. The IDA's stated aim is to assist the poorest nations in growing more quickly, equitably, and sustainably to reduce poverty. The IDA is the single largest provider of funds to economic and human development projects in the world's poorest nations. From 2000 to 2010, it financed projects which recruited and trained 3 million teachers, immunized 310 million children, funded $792 million in loans to 120,000 small and medium enterprises, built or restored 118,000 kilometers of paved roads, built or restored 1,600 bridges, and expanded access to improved water to 113 million people and improved sanitation facilities to 5.8 million people. The IDA has issued a total US$238 billion in loans and grants since its launch in 1960. Thirty-six of the association's borrowing countries have graduated from their eligibility for its concessional lending. However, nine of these countries have relapsed and have not re-graduated. (Full article...)


    IDA logo

    The International Development Association (IDA) (French: Association internationale de développement) is a development finance institution which offers concessional loans and grants to the world's poorest developing countries. The IDA is a member of the World Bank Group and is headquartered in Washington, D.C. in the United States. It was established in 1960 to complement the existing International Bank for Reconstruction and Development by lending to developing countries which suffer from the lowest gross national income, from troubled creditworthiness, or from the lowest per capita income. Together, the International Development Association and International Bank for Reconstruction and Development are collectively generally known as the World Bank, as they follow the same executive leadership and operate with the same staff.

    The association shares the World Bank's mission of reducing poverty and aims to provide affordable development financing to countries whose credit risk is so prohibitive that they cannot afford to borrow commercially or from the Bank's other programs. The IDA's stated aim is to assist the poorest nations in growing more quickly, equitably, and sustainably to reduce poverty. The IDA is the single largest provider of funds to economic and human development projects in the world's poorest nations. From 2000 to 2010, it financed projects which recruited and trained 3 million teachers, immunized 310 million children, funded $792 million in loans to 120,000 small and medium enterprises, built or restored 118,000 kilometers of paved roads, built or restored 1,600 bridges, and expanded access to improved water to 113 million people and improved sanitation facilities to 5.8 million people. The IDA has issued a total US$238 billion in loans and grants since its launch in 1960. Thirty-six of the association's borrowing countries have graduated from their eligibility for its concessional lending. However, nine of these countries have relapsed and have not re-graduated. (Full article...)
  • Image 7 The Paris Agreement (or Paris Accords, Paris Climate Accords) is an international treaty on climate change that was adopted in 2015. The treaty covers climate change mitigation, adaptation, and finance. The Paris Agreement was negotiated by 196 parties at the 2015 United Nations Climate Change Conference near Paris, France. As of February 2023, 195 members of the United Nations Framework Convention on Climate Change (UNFCCC) are parties to the agreement. Of the three UNFCCC member states which have not ratified the agreement, the only major emitter is Iran. The United States withdrew from the agreement in 2020, but rejoined in 2021. The Paris Agreement has a long-term temperature goal which is to keep the rise in global surface temperature to well below 2 °C (3.6 °F) above pre-industrial levels. The treaty also states that preferably the limit of the increase should only be 1.5 °C (2.7 °F). The lower the temperature increase, the smaller the effects of climate change can be expected. To achieve this temperature goal, greenhouse gas emissions should be reduced as soon as, and by as much as, possible. They should even reach net zero by the middle of the 21st century. To stay below 1.5 °C of global warming, emissions need to be cut by roughly 50% by 2030. This figure takes into account each country's documented pledges. (Full article...)

    The Paris Agreement (orParis Accords, Paris Climate Accords) is an international treaty on climate change that was adopted in 2015. The treaty covers climate change mitigation, adaptation, and finance. The Paris Agreement was negotiated by 196 parties at the 2015 United Nations Climate Change Conference near Paris, France. As of February 2023, 195 members of the United Nations Framework Convention on Climate Change (UNFCCC) are parties to the agreement. Of the three UNFCCC member states which have not ratified the agreement, the only major emitter is Iran. The United States withdrew from the agreement in 2020, but rejoined in 2021.

    The Paris Agreement has a long-term temperature goal which is to keep the rise in global surface temperature to well below 2 °C (3.6 °F) above pre-industrial levels. The treaty also states that preferably the limit of the increase should only be 1.5 °C (2.7 °F). The lower the temperature increase, the smaller the effects of climate change can be expected. To achieve this temperature goal, greenhouse gas emissions should be reduced as soon as, and by as much as, possible. They should even reach net zero by the middle of the 21st century. To stay below 1.5 °C of global warming, emissions need to be cut by roughly 50% by 2030. This figure takes into account each country's documented pledges. (Full article...)

  • General images - load new batch

    The following are images from various world-related articles on Wikipedia.
    (from Earth)
  • A statue of a standing man wearing a cloak (from Human history)
    Standing Buddha from Gandhara, 2nd century CE
  • Image 24Artist's conception of Devonian flora (from History of Earth)
    Artist's conception of Devonian flora (from History of Earth)
  • Stone statues of human heads and torsos
  • World map with arrows showing human migrations (from Human history)
    Peopling of the world, the Southern Dispersal scenario
  • Image 27Tiktaalik, a fish with limb-like fins and a predecessor of tetrapods. Reconstruction from fossils about 375 million years old. (from History of Earth)
    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 man standing on the moon with an American flag in the background (from Human history)
    Last Moon landing: Apollo 17 (1972)
  • Image 29Lithified 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)
    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)
  • Image 30A reconstruction of human history based on fossil data. (from History of Earth)
    A reconstruction of human history based on fossil data. (from History of Earth)
  • Image 31A High Desert storm in the Mojave (from Earth)
    AHigh Desert storm in the Mojave (from Earth)
  • Image 32An artist's impression of ice age Earth at glacial maximum. (from History of Earth)
    An artist's impression of ice age Earth at glacial maximum. (from History of Earth)
  • A dark gray and red sphere representing the Earth lies against a black background to the right of an orange circular object representing the Sun
    Conjectured illustration of the scorched Earth after the Sun has entered the red giant phase, about 5–7 billion years from now (from Earth)
  • Image 34A 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)
    A 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)
  • Three large pyramids in the desert, together with subsidiary pyramids and the remains of other structures (from Human history)
    Great Pyramids of Giza, Egypt
  • Bronze head (from Human history)
    Benin Bronze head from Nigeria
  • Image 37A map of heat flow from Earth's interior to the surface of Earth's crust, mostly along the oceanic ridges (from Earth)
    A map of heat flow from Earth's interior to the surface of Earth's crust, mostly along the oceanic ridges (from Earth)
  • Stone pillar with animals carved on it (from Human history)
    A pillar at Göbekli Tepe
  • Stone ruins in the mountains (from Human history)
    Machu Picchu, Inca Empire, Peru
  • Image 40A 2012 artistic impression of the early Solar System's protoplanetary disk from which Earth and other Solar System bodies were formed (from Earth)
    A 2012 artistic impression of the early Solar System's protoplanetary disk from which Earth and other Solar System bodies were formed (from Earth)
  • Image 41Artist'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)
    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)
  • A stone head (from Human history)
    Olmec colossal head, now at the Museo de Antropología de Xalapa
  • A stone wall going uphill with towers spaced along it (from Human history)
  • A world map colored to show imperial control (from Human history)
    Empires of the world in 1898
  • Image 45A computer-generated image mapping the prevalence of artificial satellites and space debris around Earth in geosynchronous and low Earth orbit (from Earth)
    A computer-generated image mapping the prevalence of artificial satellites and space debris around Earth in geosynchronous and low Earth orbit (from Earth)
  • Image 46Yggdrasil, an attempt to reconstruct the Norse world tree which connects the heavens, the world, and the underworld. (from World)
    Yggdrasil, an attempt to reconstruct the Norse world tree which connects the heavens, the world, and the underworld. (from World)
  • Image 47A 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)
    A 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)
  • A city skyline with tall buildings (from Human history)
    Shanghai. China urbanized rapidly in the 21st century.
  • Image 49Artist'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)
    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)
  • Symbols on a clay tablet (from Human history)
    Cuneiform inscription, Sumer, Mesopotamia, 26th century BCE
  • Image 51Relief of Earth's crust (from Earth)
    ReliefofEarth's crust (from Earth)
  • Large building with dome and four spires (from Human history)
    Hagia Sophia, Istanbul – a symbol of Byzantine civilization
  • Image 53Cross-section through a liposome (from History of Earth)
    Cross-section through a liposome (from History of Earth)
  • Image 54An artist's rendering of a protoplanetary disk (from History of Earth)
    An artist's rendering of a protoplanetary disk (from History of Earth)
  • Image 55Wittenberg, birthplace of Protestantism (from Human history)
    Wittenberg, birthplace of Protestantism (from Human history)
  • Image 56Exaggerated 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)
    Exaggerated 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)
  • Image 57An 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)
    An 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 58Earth's axial tilt causing different angles of seasonal illumination at different orbital positions around the Sun (from Earth)
    Earth's axial tilt causing different angles of seasonal illumination at different orbital positions around the Sun (from Earth)
  • Image 59Pale orange dot, an artist's impression of Early Earth, featuring its tinted orange methane-rich early atmosphere (from Earth)
    Pale orange dot, an artist's impression of Early Earth, featuring its tinted orange methane-rich early atmosphere (from Earth)
  • Statue (from Human history)
    Chennakesava Temple, Belur, India
  • Image 61Scientific worldview. (from World)
    Scientific worldview. (from World)
  • An airplane flying on a beach (from Human history)
    First airplane, the Wright Flyer, flew on 17 December 1903.
  • Skeleton (from Human history)
    "Lucy", the first Australopithecus afarensis skeleton found, was only 1.06 m (3 ft 6 in) tall.
  • Map with color and texture (from History of 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.
  • Image 65Artist's conception of Hadean Eon Earth, when it was much hotter and inhospitable to all forms of life. (from History of Earth)
    Artist's conception of Hadean Eon Earth, when it was much hotter and inhospitable to all forms of life. (from History of Earth)
  • Large temple (from Human history)
    Angkor Wat temple complex, Cambodia, early 12th century
  • Image 67A 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)
    Acomposite 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)
  • Image 68Satellite time lapse imagery of Earth's rotation showing axis tilt (from Earth)
    Satellite time lapse imagery of Earth's rotation showing axis tilt (from Earth)
  • Image 69Trilobites first appeared during the Cambrian period and were among the most widespread and diverse groups of Paleozoic organisms. (from History of Earth)
    Trilobites first appeared during the Cambrian period and were among the most widespread and diverse groups of Paleozoic organisms. (from History of Earth)
  • Diagram showing the magnetic field lines of Earth's magnetosphere. The lines are swept back in the anti-solar direction under the influence of the solar wind.
    A schematic view of Earth's magnetosphere with solar wind flowing from left to right (from Earth)
  • The graph from 1880 to 2020 shows natural drivers exhibiting fluctuations of about 0.3 degrees Celsius. Human drivers steadily increase by 0.3 degrees over 100 years to 1980, then steeply by 0.8 degrees more over the past 40 years.
    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)
  • People standing on a wall (from Human history)
  • Stone relief depicting two groups of three men facing each other (from Human history)
    Persepolis, Achaemenid Empire, 6th century BCE
  • Image 74Earth and the Moon as seen from Mars by the Mars Reconnaissance Orbiter (from Earth)
    Earth and the Moon as seen from Mars by the Mars Reconnaissance Orbiter (from Earth)
  • A miniature depicting a tonsured man, a fully armored man wearing a shield, and a man who holds a spade
    13th-century French historiated initial with the three classes of medieval society: those who prayed (the clergy), those who fought (the knights), and those who worked (the peasantry) (from Human history)
  • Painting of a ship (from Human history)
    Japanese depiction of a Portuguese carrack. European maritime innovations led to proto-globalization.
  • Image 77The 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)
    The 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 78A reconstruction of Pannotia (550 Ma). (from History of Earth)
    A reconstruction of Pannotia (550 Ma). (from History of Earth)
  • Image 79A 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)
    Abanded 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)
  • Stone pillar in front of a river (from Human history)
    Pillar erected by India's Maurya Emperor Ashoka
  • Image 81Earth's history with time-spans of the eons to scale (from History of Earth)
    Earth's history with time-spans of the eons to scale (from History of Earth)
  • Cathedral (from Human history)
    Notre-Dame de Paris, France
  • Image 83Artist's rendition of an oxinated fully-frozen Snowball Earth with no remaining liquid surface water. (from History of Earth)
    Artist's rendition of an oxinated fully-frozen Snowball Earth with no remaining liquid surface water. (from History of Earth)
  • Image 84A 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)
    A 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 85Dinosaurs were the dominant terrestrial vertebrates throughout most of the Mesozoic (from History of Earth)
    Dinosaurs were the dominant terrestrial vertebrates throughout most of the Mesozoic (from History of Earth)
  • Image 86Graph showing range of estimated partial pressure of atmospheric oxygen through geologic time (from History of Earth)
    Graph showing range of estimated partial pressure of atmospheric oxygen through geologic time (from History of Earth)
  • Image 87The 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)
    The 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)
  • Image 88COVID-19 pandemic, 2020 (from Human history)
    COVID-19 pandemic, 2020 (from Human history)
  • Image 89Earth's western hemisphere showing topography relative to Earth's center instead of to mean sea level, as in common topographic maps (from Earth)
    Earth's western hemisphere showing topography relative to Earth's center instead of to mean sea level, as in common topographic maps (from Earth)
  • Megacities of the world - show another

    San Isidro skyline

    Lima (/ˈlmə/ LEE-mə; locally [ˈlima]), founded in 1535 as the Ciudad de los Reyes (locally [sjuˈdat de los ˈreʝes], Spanish for "City of Kings"), is the capital and largest city of Peru. It is located in the valleys of the Chillón, Rímac and Lurín Rivers, in the desert zone of the central coastal part of the country, overlooking the Pacific Ocean. The city is considered the political, cultural, financial and commercial center of Peru. Due to its geostrategic importance, the Globalization and World Cities Research Network has categorized it as a "beta" tier city. Jurisdictionally, the metropolis extends mainly within the province of Lima and in a smaller portion, to the west, within the Constitutional Province of Callao, where the seaport and the Jorge Chávez Airport are located. Both provinces have regional autonomy since 2002.

    The 2023 census projection indicates that the city of Lima has an estimated population of 10,092,000 inhabitants, making it the most populated city in the country, and the second most populous in the Americas after São Paulo. Together with the seaside city of Callao, it forms a contiguous urban area known as the Lima Metropolitan Area, which encompasses a total of 10,151,200 inhabitants. When considering the constitutional province of Callao, the total agglomeration reaches a population of 11,342,100 inhabitants, one of the thirty most populated urban agglomerations in the world. (Full article...)

    List of megacities

  • Bangkok
  • Beijing
  • Bogotá
  • Buenos Aires
  • Cairo
  • Chengdu
  • Chennai
  • Chongqing
  • Delhi
  • Dhaka
  • Guangzhou
  • Hangzhou
  • Ho Chi Minh City
  • Hyderabad
  • Istanbul
  • Istanbul
  • Jakarta
  • Karachi
  • Keihanshin
  • Kinshasa
  • Kolkata
  • Lagos
  • Lahore
  • London
  • Los Angeles
  • Manila
  • Mexico City
  • Moscow
  • Mumbai
  • Nagoya
  • New York City
  • Paris
  • Rhine-Ruhr
  • Rio de Janeiro
  • São Paulo
  • Seoul
  • Shanghai
  • Shenzhen
  • Tehran
  • Tianjin
  • Tokyo
  • Xiamen
  • Did you know - load new batch

  • ... that as Malaysian prime minister, Mahathir Mohamad called the outcomes of the 1992 Earth Summit "eco-imperialism"?
  • ... that Leaders of the World included 20-foot-tall (6 m) horses?
  • ... that Dahiru Musdapher, the 12th chief justice of Nigeria, was once a BBC World Service contributor for West Africa and Hausa?
  • ... that Aristotle's system of logic formed the foundation of logical thought in the Western world for more than 2,000 years until the advent of modern symbolic logic?
  • ... that the song "House Party" by Super Junior was praised by Tedros Adhanom, the director-general of the WHO?
  • ... that according to Fodor's Travel, the 16th Avenue Tiled Steps is "possibly the world's largest mosaic staircase"?
  • ... that Chicago's Kasama is the world's first Filipino restaurant to be awarded a Michelin star?
  • Countries of the world - show another

    Flag

    Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordered by Pakistan to the east and south, Iran to the west, Turkmenistan to the northwest, Uzbekistan to the north, Tajikistan to the northeast, and China to the northeast and east. Occupying 652,864 square kilometers (252,072 sq mi) of land, the country is predominantly mountainous with plains in the north and the southwest, which are separated by the Hindu Kush mountain range. Kabul is the country's largest city and serves as its capital. According to the World Population review, , Afghanistan's population is 43 million. The National Statistics Information Authority of Afghanistan estimated the population to be 32.9 million .

    Human habitation in Afghanistan dates to the Middle Paleolithic era. Popularly referred to as the graveyard of empires, the land has historically been home to various peoples and has witnessed numerous military campaigns, including those by the Persians, Alexander the Great, the Maurya Empire, Arab Muslims, the Mongols, the British, the Soviet Union, and a US-led coalition. Afghanistan also served as the source from which the Greco-Bactrians and the Mughals, among others, rose to form major empires. The various conquests and periods in both the Iranian and Indian cultural spheres. the area was a center for Zoroastrianism, Buddhism, Hinduism, and later Islam. The modern state of Afghanistan began with the Durrani Afghan Empire in the 18th century, although Dost Mohammad Khan is sometimes considered to be the founder of the first modern Afghan state. Dost Mohammad died in 1863, days after his last campaign to unite Afghanistan, and Afghanistan was consequently thrown back into civil war. During this time, Afghanistan became a buffer state in the Great Game between the British Empire and the Russian Empire. From India, the British attempted to subjugate Afghanistan but were repelled in the First Anglo-Afghan War. However, the Second Anglo-Afghan War saw a British victory and the successful establishment of British political influence. Following the Third Anglo-Afghan War in 1919, Afghanistan became free of foreign political hegemony, and emerged as the independent Kingdom of Afghanistan in June 1926 under Amanullah Khan. This monarchy lasted almost half a century, until Zahir Shah was overthrown in 1973, following which the Republic of Afghanistan was established. (Full article...)

    List of countries

  • Algeria
  • Andorra
  • Angola
  • Antigua and Barbuda
  • Argentina
  • Armenia
  • Australia
  • Austria
  • Azerbaijan
  • Bahamas
  • Bahrain
  • Bangladesh
  • Barbados
  • Belarus
  • Belgium
  • Belize
  • Benin
  • Bhutan
  • Bolivia
  • Bosnia and Herzegovina
  • Botswana
  • Brazil
  • Brunei
  • Bulgaria
  • Burkina Faso
  • Burundi
  • Cambodia
  • Cameroon
  • Canada
  • Cape Verde
  • Central African Republic
  • Chad
  • Chile
  • China
  • Colombia
  • Comoros
  • Costa Rica
  • Croatia
  • Cuba
  • Cyprus
  • Czech Republic
  • Democratic Republic of the Congo
  • Denmark
  • Djibouti
  • Dominica
  • Dominican Republic
  • East Timor
  • Ecuador
  • Egypt
  • El Salvador
  • England
  • Equatorial Guinea
  • Eritrea
  • Estonia
  • Eswatini
  • Ethiopia
  • Fiji
  • Finland
  • France
  • Gabon
  • Gambia
  • Georgia (country)
  • Germany
  • Ghana
  • Greece
  • Grenada
  • Guatemala
  • Guinea
  • Guinea-Bissau
  • Guyana
  • Haiti
  • Honduras
  • Hong Kong
  • Hungary
  • Iceland
  • India
  • Indonesia
  • Iran
  • Iraq
  • Israel
  • Italy
  • Ivory Coast
  • Jamaica
  • Japan
  • Jordan
  • Kazakhstan
  • Kenya
  • Kiribati
  • Kosovo
  • Kuwait
  • Kyrgyzstan
  • Laos
  • Latvia
  • Lebanon
  • Lesotho
  • Liberia
  • Libya
  • Liechtenstein
  • Lithuania
  • Luxembourg
  • Madagascar
  • Malawi
  • Malaysia
  • Maldives
  • Mali
  • Malta
  • Marshall Islands
  • Mauritania
  • Mauritius
  • Mexico
  • Micronesia
  • Moldova
  • Monaco
  • Mongolia
  • Montenegro
  • Morocco
  • Mozambique
  • Myanmar
  • Namibia
  • Nauru
  • Nepal
  • Netherlands
  • New Zealand
  • Nicaragua
  • Niger
  • Nigeria
  • North Korea
  • North Macedonia
  • Northern Ireland
  • Norway
  • Oman
  • Pakistan
  • Palau
  • State of Palestine
  • Panama
  • Papua New Guinea
  • Paraguay
  • Peru
  • Philippines
  • Poland
  • Portugal
  • Qatar
  • Republic of Ireland
  • Republic of the Congo
  • Romania
  • Russia
  • Rwanda
  • Saint Kitts and Nevis
  • Saint Lucia
  • Saint Vincent and the Grenadines
  • Samoa
  • San Marino
  • São Tomé and Príncipe
  • Saudi Arabia
  • Scotland
  • Senegal
  • Serbia
  • Seychelles
  • Sierra Leone
  • Singapore
  • Slovakia
  • Slovenia
  • Solomon Islands
  • Somalia
  • South Africa
  • South Korea
  • South Sudan
  • Spain
  • Sri Lanka
  • Sudan
  • Suriname
  • Sweden
  • Switzerland
  • Syria
  • Taiwan
  • Tajikistan
  • Tanzania
  • Thailand
  • Togo
  • Tonga
  • Trinidad and Tobago
  • Tunisia
  • Turkey
  • Turkey
  • Turkmenistan
  • Tuvalu
  • Uganda
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States
  • Uruguay
  • Uzbekistan
  • Vanuatu
  • Vatican City
  • Venezuela
  • Vietnam
  • Wales
  • Yemen
  • Zambia
  • Zimbabwe
  • Wonders of the World - show another

    The Seven Wonders of the Ancient World (from left to right, top to bottom): Great Pyramid of Giza, Hanging Gardens of Babylon, Temple of Artemis at Ephesus, Statue of Zeus at Olympia, Mausoleum at Halicarnassus (also known as the Mausoleum of Mausolus), Colossus of Rhodes, and the Lighthouse of Alexandria as depicted by 16th-century Dutch artist Maarten van Heemskerck.
    Various lists of the Wonders of the World have been compiled from antiquity to the present day, in order to catalogue the world's most spectacular natural features and human-built structures.
    
    The Seven Wonders of the Ancient World is the oldest known list of this type, documenting the most remarkable human-made creations of classical antiquity; it was based on guidebooks popular among Hellenic sightseers and as such only includes works located around the Mediterranean rim and in the ancient Near East. The number seven was chosen because the Greeks believed it represented perfection and plenty, and because it reflected the number of planets known in ancient times (five) plus the Sun and Moon. (Full article...)

    List of articles

  • New7Wonders of the World
  • Seven Wonders of Canada
  • Seven Wonders of Colombia
  • Seven Wonders of Poland
  • Seven Wonders of Portugal
  • Seven Wonders of Romania
  • Seven Wonders of Russia
  • Seven Wonders of Ukraine
  • Seven Wonders of Wales
  • Seven Wonders of the Industrial World
  • Seven Wonders of Portuguese Origin in the World
  • 12 Treasures of Spain
  • Eighth Wonder of the World
  • Related portals

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  • icon Weather
  • Wetlands
  • Protected areas of the world - load new batch

    Centre for Nature Education at the Białowieża National Park, Poland

    Protected areasofPoland include the following categories, as defined by the Act on Protection of Nature (Polish: Ustawa o ochronie przyrody) of 16 April 2004, by the Polish Parliament: (Full article...)

  • Image 2 This is a list of protected areas of Afghanistan. Ab-i-Estada Nature Reserve, Ghazni Province Ajar Valley Nature Reserve, Bamyan Province Bamiyan National Heritage Park, Bamyan Province Bamiyan Plateau Protected Landscape, Bamyan Province Band-e Amir National Park, Bamyan Province Darqad (Takhar) Wildlife Reserve, Takhar Province Dasht-i-Nawar Waterfowl Sanctuary, Ghazni Province Hamun-i-Puzak Waterfowl Sanctuary, Farah and Nimroz provinces Imam Sahib (Kunduz) Wildlife Reserve, Kunduz Province Khulm Landmark Protected Area, Balkh Province Koh-e Baba (Shah Foladi) Protected Landscape, Bamyan province Kol-i-Hashmat Khan Waterfowl Sanctuary, Kabul Province Northwest Afghanistan Game Managed Reserve, Herat Province Nuristan National Park and Wildlife Reserve, Nuristan Province Pamir-i-Buzurg Wildlife Reserve, Badakhshan Province Registan Desert Wildlife Managed Reserve, Kandahar Province Wakhan National Park, Badakhshan Province Zadran National Reserve, Paktia Province (Full article...)

    This is a list of protected areasofAfghanistan.

  • Ajar Valley Nature Reserve, Bamyan Province
  • Bamiyan National Heritage Park, Bamyan Province
  • Bamiyan Plateau Protected Landscape, Bamyan Province
  • Band-e Amir National Park, Bamyan Province
  • Darqad (Takhar) Wildlife Reserve, Takhar Province
  • Dasht-i-Nawar Waterfowl Sanctuary, Ghazni Province
  • Hamun-i-Puzak Waterfowl Sanctuary, Farah and Nimroz provinces
  • Imam Sahib (Kunduz) Wildlife Reserve, Kunduz Province
  • Khulm Landmark Protected Area, Balkh Province
  • Koh-e Baba (Shah Foladi) Protected Landscape, Bamyan province
  • Kol-i-Hashmat Khan Waterfowl Sanctuary, Kabul Province
  • Northwest Afghanistan Game Managed Reserve, Herat Province
  • Nuristan National Park and Wildlife Reserve, Nuristan Province
  • Pamir-i-Buzurg Wildlife Reserve, Badakhshan Province
  • Registan Desert Wildlife Managed Reserve, Kandahar Province
  • Wakhan National Park, Badakhshan Province
  • Zadran National Reserve, Paktia Province
  • (Full article...)

  • Image 3 The following list of protected areas of British Columbia includes all federally and provincially protected areas within the Canadian province of British Columbia. As of 2015, approximately 15.46% of the province's land area and 3.17% of the province's waters are protected. (Full article...)

    The following list of protected areas of British Columbia includes all federally and provincially protected areas within the Canadian provinceofBritish Columbia. As of 2015, approximately 15.46% of the province's land area and 3.17% of the province's waters are protected. (Full article...)

  • Image 4 Canada's National Parks and National Reserves by provinces and territories This is a list of protected areas of Saskatchewan. (Full article...)

    This is a list of protected areas of Saskatchewan. (Full article...)
  • Image 5 Kentucky's system of 44 state parks has been referred to as "the nation's finest" and experiences more repeat business annually than those of any other U.S. state. The state's diverse geography provides a variety of environments to experience. From mountain lakes to expansive caves to forests teeming with wildlife, park-goers have their choice of attractions, and they are all within a day's drive of each other. Unless otherwise specified, data in the following lists are taken from Kentucky State Parks by Bill Bailey. (Full article...)

    Kentucky's system of 44 state parks has been referred to as "the nation's finest" and experiences more repeat business annually than those of any other U.S. state. The state's diverse geography provides a variety of environments to experience. From mountain lakes to expansive caves to forests teeming with wildlife, park-goers have their choice of attractions, and they are all within a day's drive of each other.

    Unless otherwise specified, data in the following lists are taken from Kentucky State Parks by Bill Bailey. (Full article...)

  • Image 6 The country of Burundi in Africa has the following national parks and other protected areas. (Full article...)

    The country of Burundi in Africa has the following national parks and other protected areas. (Full article...)

  • Image 7 This is a list of protected areas in Peru. (Full article...)

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

  • Image 8 Protected areas in Tanzania (Hifahdi za Mali hai za Tanzania, in Swahili) are extremely varied, ranging from sea habitats over grasslands to the top of the Kilimanjaro, the tallest mountain in Africa. About a third of the country's total area is protected to a certain degree as a national park, game reserve, marine park, forest reserve or the like. 840 protected areas are spread across 7,330 km2 of ocean and 361,594 km2 of land in Tanzania. The coastal and marine areas are less protected than terrestrial ecosystems, which are given the highest level of protection. Tanzania is one of the world's major biodiversity hotspots thanks to its vast national parks, "the Eastern Arc" mountains, wetlands, coastal forests, marine, and freshwater systems as remarkable reservoirs of plant and animal species. A wide range of endemic species of birds, reptiles, snakes, amphibians, wild coffee variations, and the well-known African violet flower can also be found in Tanzania. (Full article...)



    Protected areas in Tanzania (Hifahdi za Mali hai za Tanzania, in Swahili) are extremely varied, ranging from sea habitats over grasslands to the top of the Kilimanjaro, the tallest mountain in Africa. About a third of the country's total area is protected to a certain degree as a national park, game reserve, marine park, forest reserve or the like. 840 protected areas are spread across 7,330 km2 of ocean and 361,594 km2 of land in Tanzania. The coastal and marine areas are less protected than terrestrial ecosystems, which are given the highest level of protection. Tanzania is one of the world's major biodiversity hotspots thanks to its vast national parks, "the Eastern Arc" mountains, wetlands, coastal forests, marine, and freshwater systems as remarkable reservoirs of plant and animal species. A wide range of endemic species of birds, reptiles, snakes, amphibians, wild coffee variations, and the well-known African violet flower can also be found in Tanzania. (Full article...)

  • Image 9 A view at Kintrishi National Park The South Caucasian nation of Georgia is home to several protected areas, which receive protection because of their environmental, cultural or similar value. The oldest of these – now known as the Lagodekhi Protected Areas – dates back to 1912, when Georgia was part of the Russian Empire. The total area of Georgia's protected terrestrial territories is 6,501 km2 (2,510 sq mi), which amounts to approximately 9.29% of the country's territory. In addition 153 km2 (59 sq mi) of marine area protected, or 0.67% of the country's territorial waters. There are a total of 89 protected areas, including 14 Strict Nature Reserves, 12 National Parks, 20 Managed Nature Reserves, 40 Natural Monuments, 2 Ramsar sites and 1 Protected Landscape. Strict nature reserves comprise 140,672 ha, while national parks cover 276,724 ha. The total number of visitors to Georgia's protected areas was just under 1.2 million in 2019. (Full article...)

    A view at Kintrishi National Park

    The South Caucasian nation of Georgia is home to several protected areas, which receive protection because of their environmental, cultural or similar value. The oldest of these – now known as the Lagodekhi Protected Areas – dates back to 1912, when Georgia was part of the Russian Empire.

    The total area of Georgia's protected terrestrial territories is 6,501 km2 (2,510 sq mi), which amounts to approximately 9.29% of the country's territory. In addition 153 km2 (59 sq mi) of marine area protected, or 0.67% of the country's territorial waters. There are a total of 89 protected areas, including 14 Strict Nature Reserves, 12 National Parks, 20 Managed Nature Reserves, 40 Natural Monuments, 2 Ramsar sites and 1 Protected Landscape. Strict nature reserves comprise 140,672 ha, while national parks cover 276,724 ha. The total number of visitors to Georgia's protected areas was just under 1.2 million in 2019. (Full article...)

  • Image 10 Map of protected areas of the Czech Republic: national parks (grey) and protected landscape areas (green) There are several types of protected areas of the Czech Republic. The main form of landscape protection is delimitation of special protected areas. All the types of protected areas are determined by law. (Full article...)

    Map of protected areas of the Czech Republic: national parks (grey) and protected landscape areas (green)

    There are several types of protected areas of the Czech Republic. The main form of landscape protection is delimitation of special protected areas. All the types of protected areas are determined by law. (Full article...)

  • Image 11 The main protected areas of Croatia are national parks, nature parks and strict reserves. There are 444 protected areas of Croatia, encompassing 9% of the country. Those include 8 national parks in Croatia, 2 strict reserves and 11 nature parks. The most famous protected area and the oldest national park in Croatia is the Plitvice Lakes National Park, a UNESCO World Heritage Site. Velebit Nature Park is a part of the UNESCO Man and the Biosphere Programme. The strict and special reserves, as well as the national and nature parks, are managed and protected by the central government, while other protected areas are managed by counties. In 2005, the National Ecological Network was set up, as the first step in preparation of the EU accession and joining of the Natura 2000 network. The total area of all national parks in the country is 994 km2 (384 sq mi), of which 235 km2 (91 sq mi) is sea surface. Each of the national parks is maintained by a separate institution, overseen and funded by the government ministry of nature conservation and spatial development. The State Institute for Nature Protection provides centralized oversight and expertise. (Full article...)

    The main protected areas of Croatia are national parks, nature parks and strict reserves. There are 444 protected areasofCroatia, encompassing 9% of the country. Those include 8 national parks in Croatia, 2 strict reserves and 11 nature parks. The most famous protected area and the oldest national park in Croatia is the Plitvice Lakes National Park, a UNESCO World Heritage Site. Velebit Nature Park is a part of the UNESCO Man and the Biosphere Programme. The strict and special reserves, as well as the national and nature parks, are managed and protected by the central government, while other protected areas are managed by counties. In 2005, the National Ecological Network was set up, as the first step in preparation of the EU accession and joining of the Natura 2000 network.

    The total area of all national parks in the country is 994 km2 (384 sq mi), of which 235 km2 (91 sq mi) is sea surface. Each of the national parks is maintained by a separate institution, overseen and funded by the government ministry of nature conservation and spatial development. The State Institute for Nature Protection provides centralized oversight and expertise. (Full article...)

  • Image 12 Cadw is the historic environment service of the Welsh Government which manages historical buildings and ancient monuments in Wales. (Full article...)

    Cadw is the historic environment service of the Welsh Government which manages historical buildings and ancient monuments in Wales. (Full article...)

  • Image 13 Map of the Philippine archipelago In the Philippines, Protected Areas are administered by the Department of Environment and Natural Resources (DENR)'s Biodiversity Management Bureau under the National Integrated Protected Areas System (NIPAS) Act of 1992. As of 2020, there are 244 Protected Areas in the Philippines covering a total area of about 7,760,000 hectares (19,200,000 acres) – 15.4% of the Philippines' total area. (Full article...)


    In the Philippines, Protected Areas are administered by the Department of Environment and Natural Resources (DENR)'s Biodiversity Management Bureau under the National Integrated Protected Areas System (NIPAS) Act of 1992.

    As of 2020, there are 244 Protected Areas in the Philippines covering a total area of about 7,760,000 hectares (19,200,000 acres) – 15.4% of the Philippines' total area. (Full article...)
  • Image 14 Protected areas in the U.S. State of Ohio include national forest lands, Army Corps of Engineers areas, state parks, state forests, state nature preserves, state wildlife management areas, and other areas. (Full article...)
  • Image 15 Canada's National Parks and National Reserves by provinces and territories This is a list of protected areas of Nunavut. (Full article...)

    This is a list of protected areasofNunavut. (Full article...)
  • Selected world maps

    The world map by Gerardus Mercator (1569), the first map in the well-known Mercator projection
  • Image 2Time zones of the world
    Time zones of the world
  • Image 3Only a few of the largest large igneous provinces appear (coloured dark purple) on this geological map, which depicts crustal geologic provinces as seen in seismic refraction data
    Only a few of the largest large igneous provinces appear (coloured dark purple) on this geological map, which depicts crustal geologic provinces as seen in seismic refraction data
  • Image 4A plate tectonics map with volcano locations indicated with red circles
    Aplate tectonics map with volcano locations indicated with red circles
  • Image 5The Goode homolosine projection is a pseudocylindrical, equal-area, composite map projection used for world maps.
    The Goode homolosine projection is a pseudocylindrical, equal-area, composite map projection used for world maps.
  • Image 6United Nations Human Development Index map by country (2016)
    United Nations Human Development Index map by country (2016)
  • Image 7Mollweide projection of the world
    Mollweide projection of the world
  • Image 8Index map from the International Map of the World (1:1,000,000 scale)
    Index map from the International Map of the World (1:1,000,000 scale)
  • Image 91516 map of the world by Martin Waldseemüller
    1516 map of the world by Martin Waldseemüller
  • World records

  • List of world records in athletics
  • List of junior world records in athletics
  • List of world records in masters athletics
  • List of world youth bests in athletics
  • List of IPC world records in athletics
  • List of world records in canoeing
  • List of world records in chess
  • List of cycling records
  • List of world records in track cycling
  • List of world records in finswimming
  • List of world records in juggling
  • List of world records in rowing
  • List of world records in speed skating
  • List of world records in swimming
  • List of IPC world records in swimming
  • List of world records in Olympic weightlifting
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