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Geography (from Ancient Greek γεωγραφία geōgraphía; combining gê 'Earth' and gráphō 'write') is the study of the lands, features, inhabitants, and phenomena of Earth. Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. Geography has been called "a bridge between natural science and social science disciplines."

Origins of many of the concepts in geography can be traced to Greek Eratosthenes of Cyrene, who may have coined the term "geographia" (c. 276 BC – c. 195/194 BC). The first recorded use of the word γεωγραφία was as the title of a book by Greek scholar Claudius Ptolemy (100 – 170 AD). This work created the so-called "Ptolemaic tradition" of geography, which included "Ptolemaic cartographic theory." However, the concepts of geography (such as cartography) date back to the earliest attempts to understand the world spatially, with the earliest example of an attempted world map dating to the 9th century BCE in ancient Babylon. The history of geography as a discipline spans cultures and millennia, being independently developed by multiple groups, and cross-pollinated by trade between these groups. The core concepts of geography consistent between all approaches are a focus on space, place, time, and scale.

Today, geography is an extremely broad discipline with multiple approaches and modalities. There have been multiple attempts to organize the discipline, including the four traditions of geography, and into branches. Techniques employed can generally be broken down into quantitative and qualitative approaches, with many studies taking mixed-methods approaches. Common techniques include cartography, remote sensing, interviews, and surveying. (Full article...)

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Image 1

Volubilis ruins

Volubilis (Latin pronunciation: [wɔˈɫuːbɪlɪs]; Arabic: وليلي, romanized: walīlī; Berber languages: ⵡⵍⵉⵍⵉ, romanized: wlili) is a partly-excavated Berber-Roman city in Morocco situated near the city of Meknes that may have been the capital of the Kingdom of Mauretania, at least from the time of King Juba II. Before Volubilis, the capital of the kingdom may have been at Gilda.

Built in a fertile agricultural area, it developed from the 3rd century BC onward as a Berber, then proto-Carthaginian, settlement before being the capital of the kingdom of Mauretania. It grew rapidly under Roman rule from the 1st century AD onward and expanded to cover about 42 hectares (100 acres) with a 2.6 km (1.6 mi) circuit of walls. The city gained a number of major public buildings in the 2nd century, including a basilica, temple and triumphal arch. Its prosperity, which was derived principally from olive growing, prompted the construction of many fine town-houses with large mosaic floors. (Full article...)
Image 2

White birches in Marion Brooks Natural Area within Quehanna Wild Area

Quehanna Wild Area (/kwəˈhænə/) is a wildlife area within parts of Cameron, Clearfield and Elk counties in the U.S. state of Pennsylvania; with a total area of 50,000 acres (78 sq mi; 202 km²), it covers parts of Elk and Moshannon State Forests. Founded in the 1950s as a nuclear research center, Quehanna has a legacy of radioactive and toxic waste contamination, while also being the largest state forest wild area in Pennsylvania, with herds of elk. The wild area is bisected by the Quehanna Highway and is home to second growth forest with mixed hardwoods and evergreens. Quehanna has two state forest natural areas: the 1,215-acre (492 ha) M.K. Goddard/Wykoff Run Natural Area, and the 917-acre (371 ha) Marion Brooks Natural Area. The latter has the largest stand of white birch in Pennsylvania and the eastern United States.

The land that became Quehanna Wild Area was home to Native Americans, including the Susquehannock and Iroquois, before it was purchased by the United States in 1784. Settlers soon moved into the region and, in the 19th and early 20th centuries, the logging industry cut the virgin forests; clearcutting and forest fires transformed the once verdant land into the "Pennsylvania Desert". Pennsylvania bought this land for its state forests, and in the 1930s the Civilian Conservation Corps worked to improve them. In 1955 the Curtiss-Wright Corporation bought 80 square miles (210 km²) of state forest to focus on developing nuclear-powered jet engines. They named their facility Quehanna for the nearby West Branch Susquehanna River, itself named for the Susquehannocks. (Full article...)
Image 3

Maritana Avenue, one of only two paved roads in Elcor, looking south toward Manilla Street, 1980

Elcor is a ghost town, or more properly, an extinct town, in the U.S. state of Minnesota that was inhabited between 1897 and 1956. It was built on the Mesabi Iron Range near the city of Gilbert in St. Louis County. Elcor was its own unincorporated community before it was abandoned and was never a neighborhood proper of the city of Gilbert. Not rating a figure in the national census, the people of Elcor were only generally considered to be citizens of Gilbert. The area where Elcor was located was annexed by Gilbert when its existing city boundaries were expanded after 1969.

In November 1890, the seven Merritt brothers discovered ore near Mountain Iron, triggering an unparalleled iron rush to the Mesabi Range. The Elba mine was opened in 1897, and the town was platted under the direction of Don H. Bacon, president of the Minnesota Iron Company. A second nearby mine, the Corsica, was opened in 1901. The community was first called "Elba" after the name of the first underground mine (the name "Elcor" was formed later by combining the first syllables of each mine's name). The Elba and Corsica mines were both leased by Pickands Mather and Company after the formation of the United States Steel Corporation. An influx of people of many ethnicities and many nations followed, and Elcor became a microcosm of U.S. immigration, mirroring the cultural assimilation of the time. At its peak around 1920, Elcor had two churches, a post office, a general store, a primary school, a railroad station, and its own law enforcement, and housed a population of nearly 1,000. (Full article...)
Image 4

Friedrich der Grosse und der Feldscher, Bernhard Rode

The War of the Bavarian Succession (German: Bayerischer Erbfolgekrieg; 3 July 1778 – 13 May 1779) was a dispute between the Austrian Habsburg monarchy and an alliance of Saxony and Prussia over succession to the Electorate of Bavaria after the extinction of the Bavarian branch of the House of Wittelsbach. The Habsburgs sought to acquire Bavaria, and the alliance opposed them, favoring another branch of the Wittelsbachs. Both sides mobilized large armies, but the only fighting in the war was a few minor skirmishes. However, thousands of soldiers died from disease and starvation, earning the conflict the name Kartoffelkrieg (Potato War) in Prussia and Saxony; in Habsburg Austria, it was sometimes called the Zwetschgenrummel (Plum Fuss).

On 30 December 1777, Maximilian III Joseph, the last of the junior Wittelsbach line, died of smallpox, leaving no children. Charles Theodore, a scion of a senior branch of the House of Wittelsbach, held the closest claim of kinship, but he also had no legitimate children to succeed him. His cousin, Charles II August, Duke of Zweibrücken, therefore had a legitimate legal claim as Charles Theodore's heir presumptive. Across Bavaria's southern border, Emperor Joseph II coveted the Bavarian territory and had married Maximilian Joseph's sister Maria Josepha in 1765 to strengthen any claim he could extend. His agreement with the heir, Charles Theodore, to partition the territory neglected any claims of the heir presumptive, Charles August. (Full article...)
Image 5

Macedonia (/ˌmæsɪˈdoʊniə/ MASS-ih-DOH-nee-ə; Greek: Μακεδονία), also called Macedon (/ˈmæsɪdɒn/ MASS-ih-don), was an ancient kingdom on the periphery of Archaic and Classical Greece, which later became the dominant state of Hellenistic Greece. The kingdom was founded and initially ruled by the royal Argead dynasty, which was followed by the Antipatrid and Antigonid dynasties. Home to the ancient Macedonians, the earliest kingdom was centered on the northeastern part of the Greek peninsula, and bordered by Epirus to the southwest, Illyria to the northwest, Paeonia to the north, Thrace to the east and Thessaly to the south.

Before the 4th century BC, Macedonia was a small kingdom outside of the area dominated by the great city-states of Athens, Sparta and Thebes, and briefly subordinate to Achaemenid Persia. During the reign of the Argead king Philip II (359–336 BC), Macedonia subdued mainland Greece and the Thracian Odrysian kingdom through conquest and diplomacy. With a reformed army containing phalanxes wielding the sarissa pike, Philip II defeated the old powers of Athens and Thebes in the Battle of Chaeronea in 338 BC. Philip II's son Alexander the Great, leading a federation of Greek states, accomplished his father's objective of commanding the whole of Greece when he destroyed Thebes after the city revolted. During Alexander's subsequent campaign of conquest, he overthrew the Achaemenid Empire and conquered territory that stretched as far as the Indus River. For a brief period, his Macedonian Empire was the most powerful in the world – the definitive Hellenistic state, inaugurating the transition to a new period of Ancient Greek civilization. Greek arts and literature flourished in the new conquered lands and advances in philosophy, engineering, and science spread across the empire and beyond. Of particular importance were the contributions of Aristotle, tutor to Alexander, whose writings became a keystone of Western philosophy. (Full article...)
Image 6

Skeleton at the Finnish Museum of Natural History

Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range extended across the North Pacific during the Pleistocene epoch, and likely contracted to such an extreme degree due to the glacial cycle. It is possible indigenous populations interacted with the animal before Europeans. Steller first encountered it on Vitus Bering's Great Northern Expedition when the crew became shipwrecked on Bering Island. Much of what is known about its behavior comes from Steller's observations on the island, documented in his posthumous publication On the Beasts of the Sea. Within 27 years of its discovery by Europeans, the slow-moving and easily-caught mammal was hunted into extinction for its meat, fat, and hide.

Some 18th-century adults would have reached weights of 8–10 t (8.8–11.0 short tons) and lengths up to 9 m (30 ft). It was a member of the family Dugongidae, of which the 3 m (9.8 ft) long dugong (Dugong dugon) is the sole living member. It had a thicker layer of blubber than other members of the order, an adaptation to the cold waters of its environment. Its tail was forked, like that of whales or dugongs. Lacking true teeth, it had an array of white bristles on its upper lip and two keratinous plates within its mouth for chewing. It fed mainly on kelp, and communicated with sighs and snorting sounds. Steller believed it was a monogamous and social animal living in small family groups and raising its young, similar to modern sirenians. (Full article...)
Image 7

Map of ancient Egypt, showing major cities and sites of the Dynastic period (c. 3150 BC to 30 BC)

Ancient Egypt was a civilization of ancient Northeast Africa. It was concentrated along the lower reaches of the Nile River, situated within the contemporary territory of modern-day Egypt. Ancient Egyptian civilization followed prehistoric Egypt and coalesced around 3100 BC (according to conventional Egyptian chronology) with the political unification of Upper and Lower Egypt under pharaoh or king Menes (often identified with Narmer). The history of ancient Egypt unfolded as a series of stable kingdoms interspersed by periods of relative instability known as "Intermediate Periods". The various kingdoms fall into one of three categories: the Old Kingdom of the Early Bronze Age, the Middle Kingdom of the Middle Bronze Age, or the New Kingdom of the Late Bronze Age.

Ancient Egypt reached the pinnacle of its power during the New Kingdom, ruling much of Nubia and a sizable portion of the Levant. After this period, it entered an era of slow decline. During the course of its history, ancient Egypt was invaded or conquered by a number of foreign powers, including the Hyksos, the Nubians, the Assyrians, the Achaemenid Persians, and the Macedonians under Alexander the Great. The Greek Ptolemaic Kingdom, formed in the aftermath of Alexander's death, ruled until 30 BC, when, under Cleopatra, it fell to the Roman Empire and became a Roman province. Egypt remained under Roman control until the 640s AD, when it was conquered by the Rashidun Caliphate. (Full article...)
Image 8
The Somerset Levels, seen from Glastonbury Tor

The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendips to the Blackdown Hills.

The Somerset Levels have an area of about 160,000 acres (650 km²) and are bisected by the Polden Hills; the areas to the south are drained by the River Parrett, and the areas to the north by the rivers Axe and Brue. The Mendip Hills separate the Somerset Levels from the North Somerset Levels. The Somerset Levels consist of marine clay "levels" along the coast and inland peat-based "moors"; agriculturally, about 70 per cent is used as grassland and the rest is arable. Willow and teazel are grown commercially and peat is extracted. (Full article...)
Image 9
Jilu Assyrians crossing the Asadabad Pass towards Baqubah, 1918

The Sayfo (Syriac: ܣܲܝܦܵܐ, lit. 'sword'), also known as the Seyfo or the Assyrian genocide, was the mass murder and deportation of Assyrian/Syriac Christians in southeastern Anatolia and Persia's Azerbaijan province by Ottoman forces and some Kurdish tribes during World War I.

The Assyrians were divided into mutually antagonistic churches, including the Syriac Orthodox Church, the Assyrian Church of the East, and the Chaldean Catholic Church. Before World War I, they largely lived in mountainous and remote areas of the Ottoman Empire and Persia, some of which were effectively stateless. The Ottoman Empire's nineteenth-century centralization efforts led to increased violence and danger for the Assyrians. (Full article...)
Image 10

Alodia, also known as Alwa (Greek: Αρουα, Aroua; Arabic: علوة, ʿAlwa), was a medieval kingdom in what is now central and southern Sudan. Its capital was the city of Soba, located near modern-day Khartoum at the confluence of the Blue and White Nile rivers.

Founded sometime after the ancient Kingdom of Kush fell, around 350 AD, Alodia is first mentioned in historical records in 569. It was the last of the three Nubian kingdoms to convert to Christianity in 580, following Nobadia and Makuria. It possibly reached its peak during the 9th–12th centuries when records show that it exceeded its northern neighbor, Makuria, with which it maintained close dynastic ties, in size, military power and economic prosperity. Alodia was a large, multicultural state administered by a powerful king and provincial governors appointed by him. The capital Soba, described as a town of "extensive dwellings and churches full of gold and gardens", prospered as a trading hub. Goods arrived from Makuria, the Middle East, western Africa, India and even China. Literacy in both Nubian and Greek flourished. (Full article...)
Image 11

Mountain goat, official park symbol, above Hidden Lake, with Dragons Tail in the distance

Glacier National Park is a national park of the United States located in northwestern Montana, on the Canada–United States border, adjacent to Waterton Lakes National Park in Canada—the two parks are known as the Waterton-Glacier International Peace Park. The park encompasses more than 1 million acres (4,100 km²) and includes parts of two mountain ranges (sub-ranges of the Rocky Mountains), more than 130 named lakes, more than 1,000 different species of plants, and hundreds of species of animals. This vast pristine ecosystem is the centerpiece of what has been referred to as the "Crown of the Continent Ecosystem", a region of protected land encompassing 16,000 sq mi (41,000 km²).

The region that became Glacier National Park was first inhabited by Native Americans. Upon the arrival of European explorers, it was dominated by the Blackfeet in the east and the Flathead in the western regions. Under pressure, the Blackfeet ceded the mountainous parts of their treaty lands in 1895 to the federal government; it later became part of the park. Soon after the establishment of the park on May 11, 1910, a number of hotels and chalets were constructed by the Great Northern Railway. These historic hotels and chalets are listed as National Historic Landmarks and a total of 350 locations are on the National Register of Historic Places. By 1932 work was completed on the Going-to-the-Sun Road, later designated a National Historic Civil Engineering Landmark, which provided motorists easier access to the heart of the park. (Full article...)
Image 12

The Socialist Soviet Republic of Abkhazia (SSR Abkhazia) was a short-lived republic within the Caucasus region of the Soviet Union that covered the territory of Abkhazia, and existed from 31 March 1921 to 19 February 1931. Formed in the aftermath of the Red Army invasion of Georgia in 1921, it was independent until 16 December 1921 when it agreed to a treaty that united it with the Georgian Soviet Socialist Republic (Georgian SSR). The SSR Abkhazia was similar to an autonomous Soviet republic, though it retained nominal independence from Georgia and was given certain features only full union republics had, like its own military units. Through its status as a "treaty republic" with Georgia, Abkhazia joined the Transcaucasian Soviet Federative Socialist Republic, which united Armenian, Azerbaijani, and Georgian SSRs into one federal unit when the latter was formed in 1922. The SSR Abkhazia was abolished in 1931 and replaced with the Abkhaz Autonomous Soviet Socialist Republic within the Georgian SSR.

During its existence, the SSR Abkhazia was led by Nestor Lakoba, who served officially as the Chairman of the Council of People's Commissars but controlled the republic to such an extent that it was jokingly referred to as "Lakobistan". Due to Lakoba's close relationship with Soviet leader Joseph Stalin, collectivisation was delayed until after Abkhazia was incorporated into Georgia. Abkhazia remained a major tobacco producer in this era, growing over half of the USSR's supply. It also produced other agricultural produce, including tea, wine, and citrus fruits, leading to Abkhazia being one of the wealthiest regions in the Soviet Union. Its sub-tropical climate also made it a prime holiday destination, with Stalin and other Soviet leaders owning dachas (holiday homes) in the region and spending considerable time there. (Full article...)
Image 13

Sunset in the Rincon Mountain District of the park

Saguaro National Park is a national park of the United States in southeastern Arizona. The 92,000-acre (37,000 ha) park consists of two separate areas—the Tucson Mountain District (TMD), about 10 miles (16 km) west of Tucson, and the Rincon Mountain District (RMD), about 10 miles (16 km) east of the city. Both districts preserve Sonoran Desert landscapes, fauna, and flora, including the giant saguaro cactus.

The volcanic rocks on the surface of the Tucson Mountain District differ greatly from the surface rocks of the Rincon Mountain District; over the past 30 million years, crustal stretching displaced rocks from beneath the Tucson Mountains of the Tucson Mountain District to form the Rincon Mountains of the Rincon Mountain District. Uplifted, domed, and eroded, the Rincon Mountains are significantly higher and wetter than the Tucson Mountains. The Rincons, as one of the Madrean Sky Islands between the southern Rocky Mountains and the Sierra Madre Oriental in Mexico, support high biodiversity and are home to many plants and animals that do not live in the Tucson Mountain District. (Full article...)
Image 14
Ernest Joyce (right), pictured with other expedition members

Ernest Edward Mills Joyce AM (c. 1875 – 2 May 1940) was a Royal Naval seaman and explorer who participated in four Antarctic expeditions during the Heroic Age of Antarctic Exploration, in the early 20th century. He served under both Robert Falcon Scott and Ernest Shackleton. As a member of the Ross Sea party in Shackleton's Imperial Trans-Antarctic Expedition, Joyce earned an Albert Medal for his actions in bringing the stricken party to safety, after a traumatic journey on the Great Ice Barrier. He was awarded the Polar Medal with four bars, one of only two men to be so honoured, the other being his contemporary, Frank Wild.

Joyce came from a humble seafaring background and began his naval career as a boy seaman in 1891. His Antarctic experiences began 10 years later, when he joined Scott's Discovery Expedition as an Able Seaman. In 1907 Shackleton recruited Joyce to take charge of dogs and sledges on the Nimrod Expedition. Subsequently, Joyce was engaged in a similar capacity for Douglas Mawson's Australasian Antarctic Expedition in 1911, but left the expedition before it departed for the Antarctic. In 1914 Shackleton recruited Joyce for the Ross Sea party; despite his heroics this expedition marked the end of Joyce's association with the Antarctic, and of his exploring career, although he made repeated attempts to join other expeditions. (Full article...)
Image 15

Ashton-under-Lyne is a market town in Tameside, Greater Manchester, England. The population was 48,604 at the 2021 census. Historically in Lancashire, it is on the north bank of the River Tame, in the foothills of the Pennines, 6 miles (9.7 km) east of Manchester.

Evidence of Stone Age, Bronze Age, and Viking activity has been discovered in Ashton-under-Lyne. The "Ashton" part of the town's name probably dates from the Anglo-Saxon period, and derives from Old English meaning "settlement by ash trees". The origin of the "under-Lyne" suffix is less clear; it possibly derives from the Brittonic-originating word lemo meaning elm or from Ashton's proximity to the Pennines. In the Middle Ages, Ashton-under-Lyne was a parish and township and Ashton Old Hall was held by the de Asshetons, lords of the manor. Granted a royal charter in 1414, the manor spanned a rural area consisting of marshland, moorland, and a number of villages and hamlets. (Full article...)

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Vital article

Vital articles to understand Geography.

The Blue Marble, Apollo 17, December 1972

Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust. The remaining 29.2% of Earth's crust is land, most of which is located in the form of continental landmasses within Earth's land hemisphere. Most of Earth's land is somewhat humid and covered by vegetation, while large sheets of ice at Earth's polar deserts retain more water than Earth's groundwater, lakes, rivers and atmospheric water combined. Earth's crust consists of slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth has a liquid outer core that generates a magnetosphere capable of deflecting most of the destructive solar winds and cosmic radiation. (Full article...)

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Selected pictures

Image 1
Daedongyeojido
Map: Kim Jeong-ho
Daedongyeojido is a large scale map of Korea produced by Chosun Dynasty cartographer and geologist Kim Jeong-ho in 1861. Considered to mark the zenith of pre-modern Korean cartography, the map consists of 22 separate, foldable booklets, each covering approximately 47 kilometres (29 mi) (north-south) by 31.5 kilometres (19.6 mi) (east-west). Combined, they form a map of Korea that is 6.7 metres (22 ft) wide and 3.8 metres (12 ft) long. Daedongyeojido is praised for precise delineations of mountain ridges, waterways, and transportation routes, as well as its markings for settlements, administrative areas, and cultural sites.
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Image 2
Eckert II projection
Map: Strebe, using Geocart
The Eckert II projection is an equal-area pseudocylindrical map projection presented by Max Eckert-Greifendorff in 1906. In the equatorial aspect (where the equator is shown as the horizontal axis) the network of longitude and latitude lines consists solely of straight lines, and the outer boundary has the distinctive shape of an elongated hexagon.
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Image 3
Iberian cartography, 1400–1600
Map: Jorge de Aguiar
A portolan chart from 1492, the oldest known signed and dated chart of Portuguese origin. Cartography technologies greatly advanced during the Age of Discovery. Iberian mapmakers in particular focused on practical charts to use as navigational aids. Unlike Spanish maps which were regarded as state secrets, Portuguese ones were used by other countries, and Portuguese cartographers drew upon the skill and knowledge of other cultures as well.
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Image 4
Hammer retroazimuthal projection
Map: Strebe, using Geocart
The Hammer retroazimuthal projection is a modified azimuthal proposed by Ernst Hermann Heinrich Hammer in 1910. As a retroazimuthal projection, azimuths (directions) are correct from any point to the designated center point. In whole-world presentation, the back and front hemispheres overlap, making the projection a surjective function. Here, the frontside and backside hemispheres, both with a 15° graticule and center point of 45°N, 90°W, are presented side-by-side.
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Image 5
Topographic map of Florida
Map: Eric Gaba
A map showing the geography of Florida, a state in the United States. Situated on a peninsula between the Gulf of Mexico, the Atlantic Ocean, and the Straits of Florida, Florida has an extensive coastline. Its highest point, Britton Hill, is the lowest highpoint of any U.S. state. Florida is home to over 19 million people, living in 410 municipalities.
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Image 6
Gall–Peters projection
Map: Strebe, using Geocart
The Gall–Peters projection, named after James Gall and Arno Peters, is a specialization of a configurable equal-area map projection known as the cylindrical equal-area projection. It achieved considerable notoriety in the late 20th century as the centerpiece of a controversy surrounding the political implications of map design; Peters promoted it as a more faithful representation than the Mercator projection, which inflates the sizes of regions farther from the equator and thus makes the (mostly technologically underdeveloped) equatorial countries appear smaller and therefore, according to Peters, less significant.
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Image 7
Hobo–Dyer projection
Map: Strebe, using Geocart
The Hobo–Dyer projection is a cylindrical equal-area projection commissioned in 2002 by Bob Abramms and Howard Bronstein. This projection was drafted by cartographer Mick Dyer, who based it on the 1910 Behrmann projection.
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Image 8
Robinson projection
Map credit: Central Intelligence Agency
The Robinson projection is a projection of a world map showing the entire Earth at once. It was specifically created in an attempt to find a good compromise to the problem of showing the whole globe as a single flat image. The projection was devised by Arthur H. Robinson in 1963; distortion is severe close to the poles, but quickly declines to moderate levels as latitudes decrease. This Robinson-projection map, with standard parallels of 38°N and 38°S, was produced by the United States Central Intelligence Agency and shows the world as of February 2016.
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Image 9
Mercator projection
Map: Strebe, using Geocart
The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer Gerardus Mercator in 1569. Because it represents paths of constant course as straight lines, it long served as the standard map projection for nautical purposes. However, it distorts the size of objects as the latitude increases: thus areas in the mid-latitudes appear significantly larger than their actual size relative to those the equator, and those near the poles are even more exaggerated. Most modern atlases no longer use the Mercator projection for world maps or for areas distant from the equator, preferring other cylindrical projections, or forms of equal-area projection.
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Image 10
Littrow projection
Map: Strebe, using Geocart
The Littrow projection, created by Joseph Johann Littrow in 1838, is a conformal retroazimuthal map projection. It allows direct measurement of the azimuth from any point on the map to the center.
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Image 11
Typhoon Noru
Photograph credit: NASA; edited by Meow
Typhoon Noru was the second-longest lasting tropical cyclone of the northwest Pacific Ocean on record. The fifth named storm of the 2017 Pacific typhoon season, it formed on July 19 and reached peak intensity on July 31 with 175 km/h (110 mph) 10-minute sustained winds. By this time, as shown in this satellite image, the typhoon was located south of Iwo Jima, and had taken on annular characteristics, with a symmetric ring of deep convection surrounding a 30 km (19 mi) well defined eye and fairly uniform cloud top temperatures. Traveling northwestward over an area of low ocean heat content, the eye became enlarged and ragged as the system weakened. By the time Noru made landfall over Wakayama Prefecture, Japan, on August 7, it had been downgraded to a severe tropical storm. It then dissipated over the Sea of Japan on August 9 as an extratropical cyclone.
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Image 12
Albers projection
Map: Strebe, using Geocart
The Albers projection is a conic, equal area map projection, named after Heinrich C. Albers, that uses two standard parallels. Although scale and shape are not preserved, distortion is minimal between the standard parallels. This map is used by such agencies as the United States Geological Survey, the United States Census Bureau, and the governments of British Columbia and Yukon.
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Image 13
Winter of 2009–2010 in Europe
Photo: Jeff Schmaltz, MODIS Rapid Response Team, NASA
A satellite photo of Great Britain and part of Ireland showing the extent of snow cover during the winter of 2009–2010, the coldest in Europe since 1981–82. Starting on 16 December 2009 a persistent weather pattern brought cold moist air from the north with systems undergoing cyclogenesis from North American storms moving across the Atlantic Ocean to the west, and saw many parts of Europe experiencing heavy snowfall and record low temperatures.
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Image 14
Australia
Photo: MODIS (NASA)
The geography of Australia, the world's smallest continent, encompasses a wide variety of biogeographic regions. By surface area, it is the sixth-largest country in the world, but as can be seen in this composite satellite image, much of the interior is arid desert. The vast majority of the human population is concentrated along the eastern and southeastern coasts, and it is the fiftieth most populous nation.
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Image 15
Gnomonic projection
Map: Strebe, using Geocart
A gnomonic projection of a portion of the northern hemisphere, centered on the geographic North Pole. Such projections display all great circles as straight lines, resulting in any line segment on a gnomonic map showing the shortest route between the segment's two endpoints.
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Featured biography

Featured biography articles in geography

The title page of a 1634 version of Hues' Tractatus de globis in the collection of the Biblioteca Nacional de Portugal

Robert Hues (1553 – 24 May 1632) was an English mathematician and geographer. He attended St. Mary Hall at Oxford, and graduated in 1578. Hues became interested in geography and mathematics, and studied navigation at a school set up by Walter Raleigh. During a trip to Newfoundland, he made observations which caused him to doubt the accepted published values for variations of the compass. Between 1586 and 1588, Hues travelled with Thomas Cavendish on a circumnavigation of the globe, performing astronomical observations and taking the latitudes of places they visited. Beginning in August 1591, Hues and Cavendish again set out on another circumnavigation of the globe. During the voyage, Hues made astronomical observations in the South Atlantic, and continued his observations of the variation of the compass at various latitudes and at the Equator. Cavendish died on the journey in 1592, and Hues returned to England the following year.

In 1594, Hues published his discoveries in the Latin work Tractatus de globis et eorum usu (Treatise on Globes and Their Use) which was written to explain the use of the terrestrial and celestial globes that had been made and published by Emery Molyneux in late 1592 or early 1593, and to encourage English sailors to use practical astronomical navigation. Hues' work subsequently went into at least 12 other printings in Dutch, English, French and Latin. (Full article...)

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