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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.

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 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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Mexico City (Spanish: Ciudad de México, locally [sjuˈða(ð) ðe ˈmexiko] ; abbr.: CDMX; Central Nahuatl: Mexihco Hueyaltepetl, Nahuatl pronunciation: [meːˈʃiʔko wejaːlˈtepeːt͡ɬ]; Otomi: 'Monda) is the capital and largest city of Mexico, and the most populous city in North America. Mexico City is one of the most important cultural and financial centers in the world. It is located in the Valley of Mexico within the high Mexican central plateau, at an altitude of 2,240 meters (7,350 ft). The city has 16 boroughs or demarcaciones territoriales, which are in turn divided into neighborhoods or colonias.

The 2020 population for the city proper was 9,209,944, with a land area of 1,495 square kilometers (577 sq mi). According to the most recent definition agreed upon by the federal and state governments, the population of Greater Mexico City is 21,804,515, which makes it the sixth-largest metropolitan area in the world, the second-largest urban agglomeration in the Western Hemisphere (behind São Paulo, Brazil), and the largest Spanish-speaking city (city proper) in the world. Greater Mexico City has a GDP of $411 billion in 2011, which makes it one of the most productive urban areas in the world. The city was responsible for generating 15.8% of Mexico's GDP, and the metropolitan area accounted for about 22% of the country's GDP. If it were an independent country in 2013, Mexico City would be the fifth-largest economy in Latin America. (Full article...)

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Benin (/bɛˈnn/ ben-EEN, /bɪˈnn/ bin-EEN; French: Bénin [benɛ̃] , Fon: Benɛ, Fula: Benen), officially the Republic of Benin (French: République du Bénin), and also known as Dahomey, is a country in West Africa. It is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the north-west, and Niger to the north-east. The majority of its population lives on the southern coastline of the Bight of Benin, part of the Gulf of Guinea in the northernmost tropical portion of the Atlantic Ocean. The capital is Porto-Novo, and the seat of government is in Cotonou, the most populous city and economic capital. Benin covers an area of 114,763 km2 (44,310 sq mi), and its population in 2021 was estimated to be approximately 13 million.0 It is a small, tropical country. It is one of the least developed, with an economy heavily dependent on agriculture, and is an exporter of palm oil and cotton. Some employment and income arise from subsistence agriculture.[better source needed]

From the 17th to the 19th century, political entities in the area included the Kingdom of Dahomey, the city-state of Porto-Novo, and other states to the north. This region was referred to as the Slave Coast of West Africa from the early 17th century due to the high number of people who were sold and trafficked during the Atlantic slave trade to the New World. France took over the territory in 1894, incorporating it into French West Africa as French Dahomey. In 1960, Dahomey gained full independence from France. As a sovereign state, Benin has had democratic governments, military coups, and military governments. A self-described Marxist–Leninist state called the People's Republic of Benin existed between 1975 and 1990. In 1991, it was replaced by the multi-party Republic of Benin. (Full article...)
List of countries

The Seven Wonders of Portugal (Portuguese: Sete Maravilhas de Portugal) is a list of cultural wonders located in Portugal. The creation of the list was supported by the Ministry of Culture and organized by the companies Y&R Brands S.A. and Realizar S.A.

Initially 793 national monuments of Portugal were listed by Instituto Português do Património Arquitectónico (IPPAR) as candidates, however in the first round of selections a board of experts reduced the number to 77. The contenders were further reduced to 21 finalist in four different categories by Conselho de Notáveis at the University of Évora. (Full article...)

Related portals

(Full article...)
  • Image 4 Protected areas of the European Union are areas which need and/or receive special protection because of their environmental, cultural or historical value to the member states of the European Union. NATURA 2000 Special Area of Conservation (SAC) Special Protection Area (SPA) (Full article...)
    Protected areas of the European Union are areas which need and/or receive special protection because of their environmental, cultural or historical value to the member states of the European Union.
    (Full article...)
  • Image 5 "Temple Gate" Rock formation at Alkhanay National Park Protected areas of Russia, (official Russian title: Russian: Особо охраняемые природные территории, literally "Specially Protected Natural Areas"), is governed by the corresponding 1995 law of the Russian Federation. (Full article...)
    "Temple Gate" Rock formation at Alkhanay National Park

    Protected areas of Russia, (official Russian title: Russian: Особо охраняемые природные территории, literally "Specially Protected Natural Areas"), is governed by the corresponding 1995 law of the Russian Federation. (Full article...)
  • Image 6 This is a list of protected areas in Botswana. (Full article...)
    This is a list of protected areas in Botswana. (Full article...)
  • Image 7 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...)
  • Image 8 Mombacho Volcano Natural Reserve The protected areas of Nicaragua are areas that have natural beauty or significance and are protected by Nicaragua. Nicaragua has 78 protected areas that cover 22,422 km2, about 17.3% of the nations landmass. The National System of Protected Areas (SINAP) is administered by the Ministry of the Environment and Natural Resources (MARENA). (Full article...)
    Mombacho Volcano Natural Reserve

    The protected areas of Nicaragua are areas that have natural beauty or significance and are protected by Nicaragua. Nicaragua has 78 protected areas that cover 22,422 km2, about 17.3% of the nations landmass. The National System of Protected Areas (SINAP) is administered by the Ministry of the Environment and Natural Resources (MARENA). (Full article...)
  • Image 9 The sun over the Lake Niassa Reserve Protected areas in Mozambique are known as conservation areas, and are currently grouped into national parks, national reserves, forest reserves, wildlife utilisation areas (coutadas), community conservation areas, and private game farms (fazendas de bravio). There are also a number of areas that have been declared as protected areas under a variety of different legislation, which for reasons of simplicity are here grouped together as "other protected areas." Under the Conservation Law of 2014 (Law 16/2014 of June 20), protected areas will need to be reclassified into a much more flexible series of new categories which are closer to the international system used by the IUCN. International initiatives such as transfrontier parks are grouped at the end of the page. (Full article...)
    The sun over the Lake Niassa Reserve

    Protected areas in Mozambique are known as conservation areas, and are currently grouped into national parks, national reserves, forest reserves, wildlife utilisation areas (coutadas), community conservation areas, and private game farms (fazendas de bravio). There are also a number of areas that have been declared as protected areas under a variety of different legislation, which for reasons of simplicity are here grouped together as "other protected areas." Under the Conservation Law of 2014 (Law 16/2014 of June 20), protected areas will need to be reclassified into a much more flexible series of new categories which are closer to the international system used by the IUCN. International initiatives such as transfrontier parks are grouped at the end of the page. (Full article...)
  • Image 10 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 11 The Protected areas of Kyrgyzstan are regulated by the law on specially protected natural areas of 2 May 2011, last modified on 2 June 2018. In total, they cover 14,761.216 km2 (5,699.337 sq mi) and account for 7.38% of the country's total area (as of 2017). The first protected area in Kyrgyzstan (Issyk-Kul) was established in 1948. According to the Government Decree on Priorities of Conservation of Biological Diversity and the relevant Action Plan for 2014-2024 the target area for the protected areas in Kyrgyzstan is 10 percent of the country’s area by 2024. The protected areas are subdivided into seven categories: (Full article...)
    The Protected areas of Kyrgyzstan are regulated by the law on specially protected natural areas of 2 May 2011, last modified on 2 June 2018. In total, they cover 14,761.216 km2 (5,699.337 sq mi) and account for 7.38% of the country's total area (as of 2017). The first protected area in Kyrgyzstan (Issyk-Kul) was established in 1948. According to the Government Decree on Priorities of Conservation of Biological Diversity and the relevant Action Plan for 2014-2024 the target area for the protected areas in Kyrgyzstan is 10 percent of the country’s area by 2024.

    The protected areas are subdivided into seven categories: (Full article...)
  • Image 12 A National Biodiversity Conservation Area (NBCA) is an environmentally protected area in Laos. There are all together 21 different NBCAs in Laos, protecting 29,775 square kilometers. Another 10 NBCAs have been proposed, many of them being treated by authorities as though they were already officially protected. (Full article...)
    A National Biodiversity Conservation Area (NBCA) is an environmentally protected area in Laos. There are all together 21 different NBCAs in Laos, protecting 29,775 square kilometers. Another 10 NBCAs have been proposed, many of them being treated by authorities as though they were already officially protected. (Full article...)
  • Image 13 A view of Kaptai National Park This is a list of protected areas of Bangladesh. Bangladesh is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 163 million people in an area of either 148,460 square kilometres (57,320 sq mi) or 147,570 square kilometres (56,980 sq mi), making it one of the most densely populated countries in the world. (Full article...)
    A view of Kaptai National Park

    This is a list of protected areas of Bangladesh. Bangladesh is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 163 million people in an area of either 148,460 square kilometres (57,320 sq mi) or 147,570 square kilometres (56,980 sq mi), making it one of the most densely populated countries in the world. (Full article...)
  • Image 14 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 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...)
  • Image 15 Andohahela National Park in southern Madagascar The national parks of Madagascar include all officially recognized protected areas as of 2015. The protected areas network of Madagascar is managed by the Madagascar National Parks Association (PNM-ANGAP). The network includes three types of protected areas: Strict Nature Reserves (IUCN category Ia), National Parks (IUCN category II) and Wildlife Reserves (IUCN category IV). At the 2003 IUCN World Parks Congress in Durban, the Malagasy President, Marc Ravalomanana, announced an initiative to more than triple the area under protection from approximately 17,000 km2 (6,600 sq mi) to over 60,000 km2 (23,000 sq mi) (from 3% to 10% of Madagascar's area). This "Durban Vision", as it has been dubbed, involved broadening the definition of protected areas in the country and legislation has been passed to allow the creation of four new categories of protected area: Natural Parks (IUCN category II), Natural Monuments (IUCN category III), Protected Landscapes (IUCN category V), and Natural Resource Reserves (IUCN category VI). As well as allowing these new objectives for protected areas management, the new legislation also provided for entities other than PNM-ANGAP to manage protected areas, such as government ministries, community associations, NGOs and other civil society organizations, and the private sector. (Full article...)
    Andohahela National Park in southern Madagascar

    The national parks of Madagascar include all officially recognized protected areas as of 2015. The protected areas network of Madagascar is managed by the Madagascar National Parks Association (PNM-ANGAP). The network includes three types of protected areas: Strict Nature Reserves (IUCN category Ia), National Parks (IUCN category II) and Wildlife Reserves (IUCN category IV). At the 2003 IUCN World Parks Congress in Durban, the Malagasy President, Marc Ravalomanana, announced an initiative to more than triple the area under protection from approximately 17,000 km2 (6,600 sq mi) to over 60,000 km2 (23,000 sq mi) (from 3% to 10% of Madagascar's area). This "Durban Vision", as it has been dubbed, involved broadening the definition of protected areas in the country and legislation has been passed to allow the creation of four new categories of protected area: Natural Parks (IUCN category II), Natural Monuments (IUCN category III), Protected Landscapes (IUCN category V), and Natural Resource Reserves (IUCN category VI). As well as allowing these new objectives for protected areas management, the new legislation also provided for entities other than PNM-ANGAP to manage protected areas, such as government ministries, community associations, NGOs and other civil society organizations, and the private sector. (Full article...)
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