In total, there are 14 countries in Oceania, including Australia. In the United States, local cases and limited spread of dengue does occur periodically in some states with hot, humid climates and Aedes mosquitoes.water contact diseases: Schistosomaisis - also known as bilharzia, is a disease caused by parasitic worms. France considers French Polynesia an overseas country; the Kingdom of the Netherlands refers to all four of its constituent parts (Netherlands [proper], and the islands of Aruba, Curacao, and Sint Maarten) as countries; and the United Kingdom comprises the countries of England, Wales, Scotland, and Northern Ireland. Western Africa is made up of 16 Sovereign countries and the British overseas territory of Saint Helena, Ascension, and Tristan da Cunha. Christ the Redeemer Statue, Rio de Janeiro, BrazilBuilt between 1922 and 1931, the 30-meter-tall sculpture is reputed to be the largest Art Deco statue in the World. (World Bank) The Mausoleum of HalicarnassusConstructed in about 350 B.C., the Mausoleum of Halicarnassus was located on the site of the present-day city of Bodrun in southwestern Turkey. The region has a population of 382 million representing 5% of the global population. )expenditures: $23.81 trillion (2017 est. Some 97.5% of the Earth's water is saltwater. Based on the seven-continent model, and grouping islands with adjacent continents, Africa has the most countries with 54. 1. The largest and most populous on the continent is Russia, which has a population of about 146 million. Antarctica | History, Map, Climate, & Facts | Britannica Bacteria called Neisseria meningitidis cause meningococcal disease. The equatorial diameter is 12,756 km, but the polar diameter is 12,714 km; this results in the Earth's circumference at the equator being 40,075 km, while the polar circumference is 40,008 km.the physical World: The Earth is composed of three layers: the outer lithosphere (with its crust and uppermost solid mantle), the mantle (the thickest layer, with distinct upper and lower layers), and the core (with an outer (liquid) and inner (solid) core). The site is roughly divided into an agricultural sector (with myriad terraces for raising crops) and an urban sector. Europe is the worlds most developed continent, as most of the countries that it hosts are developed countries. North America consists of 23 sovereign states, Oceania has 14, and South America 12. Asia | Continent, Countries, Regions, Map, & Facts | Britannica The impressive remains lay on the ground for over 800 years before finally being sold for scrap. The most famous building, however, is the step-pyramid known as the Temple of Kukulcan that dominates the center of the site and serves as the symbol of Chichen Itza. The most populous country in Africa is Nigeria, which has a population of more than 206 million people. Asia is the largest of the world's continents, covering approximately 30 percent of the Earth's land area. Note: Countries with an entry in the 'Transcontinental' column are only counted on their primary continent. ), general assessment: Information, Communications, and Technology (ICT) is tied to economic growth; business, trade, and foreign direct investment are all based on effective sources of ICT, and development of ICT flourishes with a vigorous economy, open trade, and sound regulation; some 2020 estimates point to a digital economy worth $11.5 trillion globally, equivalent to 15.5% of global GDP (with ICT growing 2.5 times faster than global GDP over the past 15 years); 2020 reports indicate about 7.7 billion global mobile broadband subscriptions, rising from 3.3 billion in five years, and over 1.1 billion fixed broadband subscribers, up from 830 million in 2015international: economic impact - telecommunications has been and continues to be one of the worlds fastest growing markets; countries and firms are transitioning from analog to digital broadcasting, increasing automation capabilities and applications, adopting more high-definition technologies, and converting to digital channelsbroadcasting typically refers to transmission of information to all devices in a network without any acknowledgment by the receivers; data processing parts and accessories includes many supporting elements to broadcasting equipment, such as monitors, keyboards, printers, etc.in terms of market size, broadcasting equipment constituted $413 billion in global trade, making it the fifth most traded commodity in 2019; similarly, data processing equipment equaled $230 billion, the eighth most traded commodity globally; the chief exporters and importers of telecommunications commodities remain largely the same: 1) China leads in both broadcasting and data processing equipment exports, $208 billion and $81.5 billion respectively and 2) the United States, conversely, receives the most of both commodities, importing $81.1 billion in broadcasting equipment and $38.3 billion in data processing equipment in 2019infrastructure - as of 2021, 428 submarine cables have been laid worldwide with a further 36 planned; the undersea cables connect to 1,245 landing stations, total: 5.3 billion (2022 est. The kingdom retained its independence until annexed by the Roman Empire in A.D. 106. [3] The most common classification recognizes seven, which are (from largest to smallest): Asia, Africa, North America, South America, Antarctica, Europe, and Australia. 6. Concern is growing Hurricane Hilary will unleash a prolific amount of flooding rainfall on the southwestern US and parts of California as it makes a rare move over the region Sunday and into early . The Taj Mahal remains one of the most visited tourist sites in the World. An archeological survey revealed that the Wall and all its associated branches measures 21,196 km. )note: combined unemployment and underemployment in many non-industrialized countries; developed countries typically 4%-12% unemployment (2007 est. The high temperatures and pressures cause: 1) water molecules to split, creating hydroxide ions (hydrogen and oxygen atoms bound together), and 2) create structural changes in ringwoodite so that it is able to contain hydroxide ions. In its final form it was judged to be one of the Seven Wonders and it survived for 600 years. Africa also has the dubious distinction of being the poorest continent in the world. North America has a total of 23 U.N.-recognized countries and an area of just over 24,709,000 km (9,540,000 mi), which is inhabited by roughly 500 million people. ), total: 31 yearsmale: 30.3 yearsfemale: 31.8 years (2020 est. List of continents by GDP World map showing nominal GDP of countries for the year 2017 according to the IMF. as the capital of the Nabataean Kingdom, an entity that grew fabulously wealthy as the nexus of trade routes in the southern Levant. More than a year's worth of rain could be dumped on parts of the - CNN The missing continent that took 375 years to find - BBC Future Europe also includes Kosovo, a prominent territory that wishes to secede from Serbia, but has thus far been unsuccessful in that pursuit. Each year, up to 400 million people get infected with dengue. total: 510.072 million sq kmland: 148.94 million sq kmwater: 361.9 million sq kmnote: 70.9% of the world's surface is water, 29.1% is land, land area about 16 times the size of the US, top fifteen World Factbook entities ranked by size: Pacific Ocean 155,557,000 sq km; Atlantic Ocean 76,762,000 sq km; Indian Ocean 68,556,000 sq km; Southern Ocean 20,327,000 sq km; Russia 17,098,242 sq km; Antarctica 14,200,000 sq km; Arctic Ocean 14,056,000 sq km; Canada 9,984,670 sq km; United States 9,826,675 sq km; China 9,596,960 sq km; Brazil 8,515,770 sq km; Australia 7,741,220 sq km; European Union 4,324,782 sq km; India 3,287,263 sq km; Argentina 2,780,400 sq km top ten largest water bodies: Pacific Ocean 155,557,000 sq km; Atlantic Ocean 76,762,000 sq km; Indian Ocean 68,556,000 sq km; Southern Ocean 20,327,000 sq km; Arctic Ocean 14,056,000 sq km; Coral Sea 4,184,100 sq km; South China Sea 3,595,900 sq km; Caribbean Sea 2,834,000 sq km; Bering Sea 2,520,000 sq km; Mediterranean Sea 2,469,000 sq km top ten largest landmasses: Asia 44,568,500 sq km; Africa 30,065,000 sq km; North America 24,473,000 sq km; South America 17,819,000 sq km; Antarctica 14,200,000 sq km; Europe 9,948,000 sq km; Australia 7,741,220 sq km; Greenland 2,166,086 sq km; New Guinea 785,753 sq km; Borneo 751,929 sq km top ten largest islands: Greenland 2,166,086 sq km; New Guinea (Indonesia, Papua New Guinea) 785,753 sq km; Borneo (Brunei, Indonesia, Malaysia) 751,929 sq km; Madagascar 587,713 sq km; Baffin Island (Canada) 507,451 sq km; Sumatra (Indonesia) 472,784 sq km; Honshu (Japan) 227,963 sq km; Victoria Island (Canada) 217,291 sq km; Great Britain (United Kingdom) 209,331 sq km; Ellesmere Island (Canada) 196,236 sq km top ten longest mountain ranges (land-based): Andes (Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, Argentina) 7,000 km; Rocky Mountains (Canada, US) 4,830 km; Great Dividing Range (Australia) 3,700 km; Transantarctic Mountains (Antarctica) 3,500 km; Kunlun Mountains (China) 3,000 km; Ural Mountains (Russia, Kazakhstan) 2,640 km; Atlas Mountains (Morocco, Algeria, Tunisia) 2,500 km; Appalachian Mountains (Canada, US) 2,400 km; Himalayas (Pakistan, Afghanistan, India, China, Nepal, Bhutan) 2,300 km; Altai Mountains (Kazakhstan, Russia, Mongolia) 2,000 km; note - lengths are approximate; if oceans are included, the Mid-Ocean Ridge is by far the longest mountain range at 40,389 km top ten largest forested countries (sq km and percent of land): Russia 8,149,310 (49.8%); Brazil 4,935,380 (58.9%); Canada 3,470,690 (38.2%); United States 3,103,700 (33.9%); China 2,098,640 (22.3%); Democratic Republic of the Congo 1,522,670 (67.2%); Australia 1,250,590 (16.3%); Indonesia 903,250 (49.9%); Peru 738,054 (57.7%); India 708,600 (23.8%) (2016 est.) Taking these considerations into account, The World Factbook has come up with a Seven Wonders list that is indisputable, i.e., a list derived in a completely objective manner. All seven of the New Wonders are inscribed as UNESCO World Heritage Sites and are frequently cited in the literature.. Equally worthy in the same country is Teotihuacan, a far larger site outside of Mexico City that has two immense pyramids that dwarf the one at Chichen Itza.). King is a cavalry scout who joined the military in January 2021. )biomass and waste: 2.4% of total installed capacity (2020 est. SGWP (gross world product), 3.5% (2021 est. ), ten largest urban agglomerations: Tokyo (Japan) - 37,393,000; New Delhi (India) - 30,291,000; Shanghai (China) - 27,058,000; Sao Paulo (Brazil) - 22,043,000; Mexico City (Mexico) - 21,782,000; Dhaka (Bangladesh) - 21,006,000; Cairo (Egypt) - 20,901,000; Beijing (China) - 20,463,000; Mumbai (India) - 20,411,000; Osaka (Japan) - 19,165,000 (2020)ten largest urban agglomerations, by continent:Africa - Cairo (Egypt) - 20,901,000; Lagos (Nigeria) - 134,368,000; Kinshasha (DRC) - 14,342,000; Luanda (Angola) - 8,330,000; Dar Es Salaam (Tanzania) - 6,702,000; Khartoum (Sudan) - 5,829,000; Johannesburg (South Africa) - 5,783,000; Alexandria (Egypt) - 5,281,000; Abidjan (Cote d'Ivoire) - 5,203,000; Addis Ababa (Ethiopia) - 4,794,000Asia - Tokyo (Japan) - 37,393,000; New Delhi (India) - 30,291,000; Shanghai (China) - 27,058,000; Dhaka (Bangladesh) - 21,006,000; Beijing (China) - 20,463,000; Mumbai (India) - 20,411,000; Osaka (Japan) - 19,165,000; Karachi (Pakistan) - 16,094,000; Chongqing (China) - 15,872,000; Istanbul (Turkey) - 15,190,000Europe - Moscow (Russia) - 12,538,000; Paris (France) - 11,017,000; London (United Kingdom) - 9,304,000; Madrid (Spain) - 6,618,000; Barcelona (Spain) - 5,586,000, Saint Petersburg (Russia) - 5,468,000; Rome (Italy) - 4,257,000; Berlin (Germany) - 3,562,000; Athens (Greece) - 3,153,000; Milan (Italy) - 3,140,000North America - Mexico City (Mexico) - 21,782,000; New York-Newark (United States) - 18,804,000; Los Angeles-Long Beach-Santa Ana (United States) - 12,447,000; Chicago (United States) - 8,865,000; Houston (United States) - 6,371,000; Dallas-Fort Worth (United States) - 6,301,000; Toronto (Canada) - 6,197,000; Miami (United States) - 6,122,000; Atlanta (United States) - 5,803,000; Philadelphia (United States) - 5,717,000Oceania - Melbourne (Australia) - 4,968,000, Sydney (Australia) - 4,926,000; Brisbane (Australia) - 2,406,000; Perth (Australia) - 2,042,000; Auckland (New Zealand) - 1,607,000; Adelaide (Australia) - 1,336,000; Gold Coast-Tweed Head (Australia) - 699,000; Canberra (Australia) - 457,000; Newcastle-Maitland (Australia) - 450,000; Wellington (New Zealand) - 415,000South America - Sao Paulo (Brazil) - 22,043,000; Buenos Aires (Argentina) - 15,154,000; Rio de Janeiro (Brazil) - 13,458,000; Bogota (Colombia) - 10,978,000; Lima (Peru) - 10,719,000; Santiago (Chile) - 6,767,000; Belo Horizonte (Brazil) - 6,084,000; Brasilia (Brazil) - 4,646,000; Porto Alegre (Brazil) - 4,137,000; Recife (Brazil) - 4,127,000 (2020), at birth: 1.07 male(s)/female0-14 years: 1.07 male(s)/female15-64 years: 1.07 male(s)/female65 years and over: 0.81 male(s)/femaletotal population: 1.01 male(s)/female (2020 est. Different classification systems define different numbers of biomes. )solar: 3.3% of total installed capacity (2020 est. SaharaThe World's largest hot desert that spreads across Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Sudan, and Tunisia (see alternate below). Antarctica Learn more about the 7 continents. )developed countries: 1.9% (2017 est.) Armenia and Cyprus, which lie completely in Western Asia, are geopolitically European countries. Who is Travis King, and what comes next for the US soldier in North Does one go by length, depth, or total area of canyon system? Africa's northeast extremity is frequently delimited at the Isthmus of Suez, but for geopolitical purposes, the Egyptian Sinai Peninsula is often included as part of Africa. note 1: the six UN languages - Arabic, Chinese (Mandarin), English, French, Russian, and Spanish (Castilian) - are the mother tongue or second language of about 49.6% of the world's population (2022), and are the official languages in more than half the states in the world; some 400 languages have more than a million first-language speakers (2018) note 2: all told, there are estimated to be just over 7,151 languages spoken in the world (2022); approximately 80% of these languages are spoken by less than 100,000 people; about 150 languages are spoken by fewer than 10 people; communities that are isolated from each other in mountainous regions often develop multiple languages; Papua New Guinea, for example, boasts about 840 separate languages (2018) note 3: approximately 2,300 languages are spoken in Asia, 2,140, in Africa, 1,310 in the Pacific, 1,060 in the Americas, and 290 in Europe (2020), Christian 31.1%, Muslim 24.9%, Hindu 15.2%, Buddhist 6.6%, folk religions 5.6%, Jewish <1%, other <1%, unaffiliated 15.6% (2020 est. Argentina trails closely behind with about 45 million people, followed by Peru at 33 million, and Venezuela at 29 million. Oceania spans over 8,525,989 km (3,291,902 mi) and is home to about 42.9 million people. Asia makes up the eastern portion of the Eurasian supercontinent; Europe occupies the western portion. )tide and wave: 0% of total installed capacity (2020 est. [7] Today, in 2017, the current world population has exceeded 7 billions (7,299,000,000). ), total subscriptions: 8.06 billion (2021 est. Petra, Maan, JordanPetra is believed to have been established in the 4th century B.C. Contemporary descriptions list its height at about 70 cubits or some 33 m approximately the same height as the Statue of Liberty from heel to top of head (34 m) thus making it the tallest statue in the ancient world. Desert alternate (no. Northern Africa has a population of about 238 million representing 3.12 percent of the global population. World - The World Factbook Asia is the largest and most populous continent, while Australia and Oceania are the smallest and least populous. The surface of the Earth is approximately 70.9% water and 29.1% land. Dengue has emerged as a worldwide problem since the 1960s. The infectious form of the parasite, known as cercariae, emerge from the snail into the water. Answer and Explanation: Other regions of the world experience lower overall rates of disease and occasional outbreaks. However, depending on where you live, you may have learned that there are five, six, or even four continents. Continent Facts | The 7 Continents of the World | Fun Facts for Kids It was severely damaged by three earthquakes between A.D. 956 and 1323, when it was deactivated. 2. and the Colossus of Rhodes was the first to be destroyed in about 226 B.C., so the Seven Wonders existed at the same time for only some 50 years in the middle of the third century B.C. Although the above groupings are the most common, different continental dispositions are recognized or taught in certain parts of the World, with some arrangements more heavily based on cultural spheres rather than physical geographic considerations. The easternmost extent of Europe is generally defined as being the Ural Mountains and the Ural River; on the southeast the Caspian Sea; and on the south the Caucasus Mountains, the Black Sea, and the Mediterranean. Which Continent Has The Most Countries With GDPs Below $100 Billion ), total dependency ratio: 54.1youth dependency ratio: 39.3elderly dependency ratio: 14.8potential support ratio: 7 (2021 est. ), the whole range of industrial and agricultural goods and servicestop ten - share of world trade: 14.8 electrical machinery, including computers; 14.4 mineral fuels, including oil, coal, gas, and refined products; 14.2 nuclear reactors, boilers, and parts; 8.9 cars, trucks, and buses; 3.5 scientific and precision instruments; 3.4 plastics; 2.7 iron and steel; 2.6 organic chemicals; 2.6 pharmaceutical products; 1.9 diamonds, pearls, and precious stones (2007 est. A vast continent of 1.89 million sq miles (4.9 million sq km) it is around six times the size of Madagascar. ), revenues: $21.68 trillion (2017 est. The 10 Most Populated Countries In The World - WorldAtlas Continents Of The World - WorldAtlas Africa comprises 54 countries. )$75.09 trillion (31 December 2016 est. Even though the polling was unscientific, the seven winners were a worthy compilation of extraordinary Wonders to be found around the world. The city is justifiably famous for two things, its stunning rock-cut architecture and its water conduit system, which allowed the Nabataeans to control and store the water supply in this desert region and create an artificial oasis. Slovenia floods kill at least six in 'worst natural disaster to ever Schistosoma parasites can penetrate the skin of persons who are wading, swimming, bathing, or washing in contaminated water.respiratory diseases: Meningococcal meningitis - Meningococcal disease occurs worldwide, with the highest incidence of disease found in the meningitis belt of sub-Saharan Africa (see attached map). It was the tomb of Mausolus, a Persian ruler, and his wife. For example, while the most widely taught geological theory divides the Earth into seven continents, this is not a constant. Which continent has the most countries? - Quora These Wonders all are the biggest in their respective categories (they cannot be topped) and so there can be no dispute with the choice, therefore the 'ultra' designation. top ten largest (non-polar) deserts: Sahara (Algeria, Chad, Egypt, Libya, Mali, Mauritania, Niger, Western Sahara, Sudan, Tunisia) 9,200,000 sq km; Arabian (Saudi Arabia, Iraq, Jordan, Kuwait, Oman, Qatar, United Arab Emirates, Yemen) 2,330,000 sq km; Gobi (China, Mongolia) 1,295,000 sq km; Kalahari (Botswana, Namibia, South Africa) 900,000 sq km; Patagonian (Argentina) 673,000 sq km; Syrian (Syria, Iraq, Jordan, Saudi Arabia) 500,000 sq km; Chihuahuan (Mexico) 362,000 sq km; Kara-Kum (Turkmenistan) 350,000 sq km; Great Victoria (Australia) 348,750 sq km; Great Basin (United States) 343,169 sq km; note - if the two polar deserts are included, they would rank first and second: Antarctic Desert 14,200,000 sq km and Arctic Desert 13,900,000 sq km ten smallest independent countries: Holy See (Vatican City) 0.44 sq km; Monaco 2 sq km; Nauru 21 sq km; Tuvalu 26 sq km; San Marino 61 sq km; Liechtenstein 160 sq km; Marshall Islands 181 sq km; Saint Kitts and Nevis 261 sq km; Maldives 298 sq km; Malta 316 sq km, the land boundaries in The World Factbook total 279,035.5 km (not counting shared boundaries twice); two nations, China and Russia, each border 14 other countriesnote 1: the total is actually misleading in terms of accuracy, since one cannot accurately measure every river meander along a boundary; a number rounded slightly higher - to 280,000 km - makes more sense and has been coordinated with and approved by the US State Department note 2: 46 nations and other areas are landlocked, these include: Afghanistan, Andorra, Armenia, Austria, Azerbaijan, Belarus, Bhutan, Bolivia, Botswana, Burkina Faso, Burundi, Central African Republic, Chad, Czechia, Eswatini, Ethiopia, Holy See (Vatican City), Hungary, Kazakhstan, Kosovo, Kyrgyzstan, Laos, Lesotho, Liechtenstein, Luxembourg, Macedonia, Malawi, Mali, Moldova, Mongolia, Nepal, Niger, Paraguay, Rwanda, San Marino, Serbia, Slovakia, South Sudan, Switzerland, Tajikistan, Turkmenistan, Uganda, Uzbekistan, West Bank, Zambia, Zimbabwe; two of these, Liechtenstein and Uzbekistan, are doubly landlockednote 3: worldwide, some one-quarter of interior (non-coastal) borders are rivers; South America with 43% leads the continents, followed by North America with 32%, Africa with 30%, Europe with 23%, and Asia with 18%; Australia has no interior national river borders, 356,000 kmnote: 95 nations and other entities are islands that border no other countries, they include: American Samoa, Anguilla, Antigua and Barbuda, Aruba, Ashmore and Cartier Islands, The Bahamas, Bahrain, Baker Island, Barbados, Bermuda, Bouvet Island, British Indian Ocean Territory, British Virgin Islands, Cabo Verde, Cayman Islands, Christmas Island, Clipperton Island, Cocos (Keeling) Islands, Comoros, Cook Islands, Coral Sea Islands, Cuba, Curacao, Cyprus, Dominica, Falkland Islands (Islas Malvinas), Faroe Islands, Fiji, French Polynesia, French Southern and Antarctic Lands, Greenland, Grenada, Guam, Guernsey, Heard Island and McDonald Islands, Howland Island, Iceland, Isle of Man, Jamaica, Jan Mayen, Japan, Jarvis Island, Jersey, Johnston Atoll, Kingman Reef, Kiribati, Madagascar, Maldives, Malta, Marshall Islands, Mauritius, Mayotte, Federated States of Micronesia, Midway Islands, Montserrat, Nauru, Navassa Island, New Caledonia, New Zealand, Niue, Norfolk Island, Northern Mariana Islands, Palau, Palmyra Atoll, Paracel Islands, Philippines, Pitcairn Islands, Puerto Rico, Saint Barthelemy, Saint Helena, Saint Kitts and Nevis, Saint Lucia, Saint Pierre and Miquelon, Saint Vincent and the Grenadines, Samoa, Sao Tome and Principe, Seychelles, Singapore, Sint Maarten, Solomon Islands, South Georgia and the South Sandwich Islands, Spratly Islands, Sri Lanka, Svalbard, Taiwan, Tokelau, Tonga, Trinidad and Tobago, Turks and Caicos Islands, Tuvalu, Vanuatu, Virgin Islands, Wake Island, Wallis and Futuna, a variety of situations exist, but in general, most countries make the following claims measured from the mean low-tide baseline as described in the 1982 UN Convention on the Law of the Sea: territorial sea - 12 nm, contiguous zone - 24 nm, and exclusive economic zone - 200 nm; additional zones provide for exploitation of continental shelf resources and an exclusive fishing zone; boundary situations with neighboring states prevent many countries from extending their fishing or economic zones to a full 200 nm, a wide equatorial band of hot and humid tropical climates, bordered north and south by subtropical temperate zones that separate two large areas of cold and dry polar climatesten driest places on Earth (average annual precipitation): McMurdo Dry Valleys, Antarctica 0 mm (0 in)Arica, Chile 0.76 mm (0.03 in)Al Kufrah, Libya 0.86 mm (0.03 in)Aswan, Egypt 0.86 mm (0.03 in)Luxor, Egypt 0.86 mm (0.03 in)Ica, Peru 2.29 mm (0.09 in)Wadi Halfa, Sudan 2.45 mm (0.1 in)Iquique, Chile 5.08 mm (0.2 in)Pelican Point, Namibia 8.13 mm (0.32 in)El Arab (Aoulef), Algeria 12.19 mm (0.48 in)ten wettest places on Earth (average annual precipitation): Mawsynram, India 11,871 mm (467.4 in)Cherrapunji, India 11,777 mm (463.7 in)Tutunendo, Colombia 11,770 mm (463.4 in)Cropp River, New Zealand 11,516 mm (453.4 in)San Antonia de Ureca, Equatorial Guinea 10,450 mm (411.4 in)Debundsha, Cameroon 10,299 mm (405.5 in)Big Bog, US (Hawaii) 10,272 mm (404.4 in)Mt Waialeale, US (Hawaii) 9,763 mm (384.4 in)Kukui, US (Hawaii) 9,293 mm (365.9 in)Emeishan, China 8,169 mm (321.6 in)ten coldest places on Earth (lowest average monthly temperature): Verkhoyansk, Russia (Siberia) -47C (-53F) JanuaryOymyakon, Russia (Siberia) -46C (-52F) JanuaryEureka, Canada -38.4C (-37.1F) FebruaryIsachsen, Canada -36C (-32.8F) FebruaryAlert, Canada -34C (-28F) FebruaryKap Morris Jesup, Greenland -34C (-29F) MarchCornwallis Island, Canada -33.5C (-28.3F) FebruaryCambridge Bay, Canada -33.5C (28.3F) FebruaryIlirnej, Russia -33C (-28F) JanuaryResolute, Canada -33C (-27.4F) Februaryten hottest places on Earth (highest average monthly temperature): Death Valley, US (California) 39C (101F) JulyIranshahr, Iran 38.3C (100.9F) June Ouallene, Algeria 38C (100.4F) JulyKuwait City, Kuwait 37.7C (100F) JulyMedina, Saudi Arabia 36C (97F) JulyBuckeye, US (Arizona) 34C (93F) JulyJazan, Saudi Arabia 33C (91F) JuneAl Kufrah, Libya 31C (87F) JulyAlice Springs, Australia 29C (84F) JanuaryTamanrasset, Algeria 29C (84F) June, tremendous variation of terrain may be found on each of the continents; check the World "Elevation" entry for a compilation of terrain extremes; the world's ocean floors also display extraordinary variation while the ocean surfaces form a dynamic, continuously changing environment; check the "Bathymetry" and "Major surface currents" entries under each of the five ocean entries (Arctic, Atlantic, Indian, Pacific, and Southern) for further information on oceanic environsTen Cave Superlatives: compiled from "Geography - note(s)" under various country entries where more details may be foundlargest cave: Son Doong in Phong Nha-Ke Bang National Park, Vietnam is the World's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volumelargest ice cave: the Eisriesenwelt (Ice Giants World) inside the Hochkogel mountain near Werfen, Austria is the World's largest and longest ice cave system at 42 km (26 mi) longest cave: Mammoth Cave, in west-central Kentucky, is the World's longest known cave system with more than 650 km (405 mi) of surveyed passagewayslongest salt cave: the Malham Cave in Mount Sodom in Israel is the World's longest salt cave at 10 km (6 mi); its survey is not complete and its length will undoubtedly increaselongest underwater cave: the Sac Actun cave system in Mexico at 348 km (216 mi) is the longest underwater cave in the World and the second longest cave worldwidelongest lava tube cave: Kazumura Cave on the island of Hawaii is the World's longest and deepest lava tube cave; it has been surveyed at 66 km (41 mi) long and 1,102 m (3,614 ft) deep deepest cave: Veryovkina Cave in the Caucasus country of Georgia is the World's deepest cave, plunging down 2,212 m (7,257 ft)deepest underwater cave: the Hranice Abyss in Czechia is the World's deepest surveyed underwater cave at 404 m (1,325 ft); its survey is not complete and it could end up being some 800-1,200 m deeplargest cave chamber: the Miao Room in the Gebihe cave system at China's Ziyun Getu He Chuandong National Park encloses some 10.78 million cu m (380.7 million cu ft) of volumelargest bat cave: Bracken Cave outside of San Antonio, Texas is the World's largest bat cave; it is the summer home to the largest colony of bats in the World; an estimated 20 million Mexican free-tailed bats roost in the cave from March to October making it the World's largest known concentration of mammalsbonus "cave" - the world's largest sinkhole: the Xiaoxhai Tiankeng sinkhole in Chongqing Municipality, China is 660 m deep, with a volume of 130 million cu m, highest point: Mount Everest 8,849 mlowest point: Denman Glacier (Antarctica) more than -3,500 m (in the oceanic realm, Challenger Deep in the Mariana Trench is the lowest point, lying -10,924 m below the surface of the Pacific Ocean)mean elevation: 840 mtop ten highest mountains (measured from sea level): Mount Everest (China-Nepal) 8,849 m; K2 (Pakistan) 8,611 m; Kanchenjunga (India-Nepal) 8,598 m; Lhotse (Nepal) 8,516 m; Makalu (China-Nepal) 8,463 m; Cho Oyu (China-Nepal) 8,201 m; Dhaulagiri (Nepal) 8,167 m; Manaslu (Nepal) 8,163 m; Nanga Parbat (Pakistan) 8,125 m; Anapurna (Nepal) 8,091 m; note - Mauna Kea (United States) is the world's tallest mountain as measured from base to summit; the peak of this volcanic colossus lies on the island of Hawaii, but its base begins more than 70 km offshore and at a depth of about 6,000 m; total height estimates range from 9,966 m to 10,203 m top ten highest island peaks: Puncak Jaya (New Guinea) 4,884 m (Indonesia)*; Mauna Kea (Hawaii) 4,207 m (United States); Gunung Kinabalu (Borneo) 4,095 m (Malaysia)*; Yu Shan (Taiwan) 3,952 (Taiwan)*; Mount Kerinci (Sumatra) 3,805 m (Indonesia); Mount Erebus (Ross Island) 3,794 (Antarctica); Mount Fuji (Honshu) 3,776 m (Japan)*; Mount Rinjani (Lombok) 3,726 m (Indonesia); Aoraki-Mount Cook (South Island) 3,724 m (New Zealand)*; Pico de Teide (Tenerife) 3,718 m (Spain)*; note - * indicates the highest peak for that Factbook entry highest point on each continent: Asia - Mount Everest (China-Nepal) 8,849 m; South America - Cerro Aconcagua (Argentina) 6,960 m; North America - Denali (Mount McKinley) (United States) 6,190 m; Africa - Kilimanjaro (Tanzania) 5,895 m; Europe - El'brus (Russia) 5,633 m; Antarctica - Vinson Massif 4,897 m; Australia - Mount Kosciuszko 2,229 m highest capital on each continent: South America - La Paz (Bolivia) 3,640 m; Africa - Addis Ababa (Ethiopia) 2,355 m; Asia - Thimphu (Bhutan) 2,334 m; North America - Mexico City (Mexico) 2,240 m; Europe - Andorra la Vella (Andorra) 1,023 m; Australia - Canberra (Australia) 605 m lowest point on each continent: Antarctica - Denman Glacier more than -3,500 m; Asia - Dead Sea (Israel-Jordan) -431 m; Africa - Lac Assal (Djibouti) -155 m; South America - Laguna del Carbon (Argentina) -105 m; North America - Death Valley (United States) -86 m; Europe - Caspian Sea (Azerbaijan-Kazakhstan-Russia) -28 m; Australia - Lake Eyre -15 lowest capital on each continent: Asia - Baku (Azerbaijan) -28 m; Europe - Amsterdam (Netherlands) -2 m; Africa - Banjul (Gambia); Bissau (Guinea-Bissau), Conakry (Guinea), Djibouti (Djibouti), Libreville (Gabon), Male (Maldives), Monrovia (Liberia), Tunis (Tunisia), Victoria (Seychelles) 0 m; North America - Basseterre (Saint Kitts and Nevis), Kingstown (Saint Vincent and the Grenadines), Panama City (Panama), Port of Spain (Trinidad and Tobago), Roseau (Dominica), Saint John's (Antigua and Barbuda), Santo Domingo (Dominican Republic) 0 m; South America - Georgetown (Guyana) 0 m; Australia - Canberra (Australia) 605 m, the rapid depletion of nonrenewable mineral resources, the depletion of forest areas and wetlands, the extinction of animal and plant species, and the deterioration in air and water quality pose serious long-term problems, top ten largest natural lakes: Caspian Sea (Azerbaijan, Iran, Kazakhstan, Russia, Turkmenistan) 374,000 sq km; Lake Superior (Canada, United States) 82,100 sq km; Lake Victoria (Kenya, Tanzania, Uganda) 62,940 sq km; Lake Huron (Canada, United States) 59,600 sq km; Lake Michigan (United States) 57,750 sq km; Lake Tanganyika (Burundi, Democratic Republic of the Congo, Tanzania, Zambia) 32,000 sq km; Great Bear Lake (Canada) 31,328 sq km; Lake Baikal (Russia) 31,500 sq km; Lake Malawi (Malawi, Mozambique, Tanzania) 22,490 sq km; Great Slave Lake (Canada) 28,568 sq kmnote 1: the areas of the lakes are subject to seasonal variation; only the Caspian Sea is saline, the rest are fresh waternote 2: Lakes Huron and Michigan are technically a single lake because the flow of water between the Straits of Mackinac that connects the two lakes keeps their water levels at near-equilibrium; combined, Lake Huron-Michigan is the largest freshwater lake by surface area in the World, top ten longest rivers: Nile (Africa) 6,650 km; Amazon (South America) 6,436 km; Yangtze (Asia) 6,300 km; Mississippi-Missouri (North America) 6,275 km; Yenisey-Angara (Asia) 5,539 km; Huang He/Yellow (Asia) 5,464 km; Ob-Irtysh (Asia) 5,410 km; Congo (Africa) 4,700 km; Amur (Asia) 4,444 km; Lena (Asia) 4,400 kmnote: there are 20 countries without rivers: 3 in Africa (Comoros, Djibouti, Libya), 1 in the Americas (Bahamas), 8 in Asia (Bahrain, Kuwait, Maldives, Oman, Qatar, Saudi Arabia, United Arab Emirates, Yemen), 3 in Europe (Malta, Monaco, Holy See), 5 in Oceania (Kiribati, Marshall Islands, Nauru, Tonga, Tuvalu); these countries also do not have natural lakes, summary statement: a watershed is a drainage basin on an area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water; oceans ultimately take in the drainage from 83% of all land area; the remaining 17% of the land drains into internal (endorheic) basins, e.g., the Caspian Sea; The World Factbook lists 51 different watersheds across 102 countries; of these, 18 are in Asia, 9 in Europe, 9 in Africa, 8 in North and Central America, 5 in South America, and 2 in Australia; all watersheds with an area of at least 500,000 sq km have been included along with a number of smaller, regionally significant watersheds; together, these watersheds represent the surface hydrology water flows that are the World's primary sources of fresh water for individual consumption, industry, and agriculture, summary statement: aquifers are underground layers of water-bearing permeable rock formations; they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences); groundwater from aquifers can be extracted using a water well; The World Factbook lists 37 major aquifers across 52 countries; of these, 13 are in Africa, 10 in Asia, 5 in North America, 3 in South America, 4 in Europe, and 2 in Australia; although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater; the fresh water held in these aquifers represents more than 30% of the World's fresh water; in the US, groundwater is primarily used for irrigation and globally, 70% of groundwater withdrawn is used for agriculture; groundwater also supplies almost half of all drinking water worldwide, six of the world's seven continents are widely and permanently inhabited; Asia is easily the most populous continent with about 60% of the world's population (China and India together account for over 35%); Africa comes in second with over 15% of the earth's populace, Europe has about 10%, North America 8%, South America almost 6%, and Oceania less than 1%; the harsh conditions on Antarctica prevent any permanent habitation, large areas subject to severe weather (tropical cyclones); natural disasters (earthquakes, landslides, tsunamis, volcanic eruptions)volcanism: volcanism is a fundamental driver and consequence of plate tectonics, the physical process reshaping the Earth's lithosphere; the World is home to more than 1,500 potentially active volcanoes, with over 500 of these having erupted in historical times; an estimated 500 million people live near these volcanoes; associated dangers include lava flows, lahars (mudflows), pyroclastic flows, ash clouds, ash fall, ballistic projectiles, gas emissions, landslides, earthquakes, and tsunamis; in the 1990s, the International Association of Volcanology and Chemistry of the Earth's Interior, created a list of 16 Decade Volcanoes worthy of special study because of their great potential for destruction: Avachinsky-Koryaksky (Russia), Colima (Mexico), Etna (Italy), Galeras (Colombia), Mauna Loa (United States), Merapi (Indonesia), Nyiragongo (Democratic Republic of the Congo), Rainier (United States), Sakurajima (Japan), Santa Maria (Guatemala), Santorini (Greece), Taal (Philippines), Teide (Spain), Ulawun (Papua New Guinea), Unzen (Japan), Vesuvius (Italy); see second note under "Geography - note"Volcano statistics and superlatives:countries with the most volcanoes (Holocene Epoch, the past 12,000 years): United States (162), Japan (122), Indonesia (120), Russia (117), Chile (91); note - roughly 1,350 volcanoes have erupted over this time period; about 40-50 eruptions are ongoing at any one time; the frequency of volcanoes has not increasedlongest erupting volcano: Santa Maria volcano in Guatemala has been constantly erupting since 22 June 1922; note - the Yasur volcano on Tanna Island in Vanuatu was observed to be erupting by Captain Cook in 1774 and has been in constant activity since then, but it is not cited since it has no clear start date; research (tephra stratigraphy and radiocarbon dating) shows that activity may have begun on Yasur ca.
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