New York City
The City of New York called either New York City or New York, is the most populous city in the United States. With an estimated 2017 population of 8,622,698 distributed over a land area of about 302.6 square miles, New York is the most densely populated major city in the United States. Located at the southern tip of the state of New York, the city is the center of the New York metropolitan area, the largest metropolitan area in the world by urban landmass and one of the world's most populous megacities, with an estimated 20,320,876 people in its 2017 Metropolitan Statistical Area and 23,876,155 residents in its Combined Statistical Area. A global power city, New York City has been described as the cultural and media capital of the world, exerts a significant impact upon commerce, research, education, tourism, art and sports; the city's fast pace has inspired the term New York minute. Home to the headquarters of the United Nations, New York is an important center for international diplomacy.
Situated on one of the world's largest natural harbors, New York City consists of five boroughs, each of, a separate county of the State of New York. The five boroughs – Brooklyn, Manhattan, The Bronx, Staten Island – were consolidated into a single city in 1898; the city and its metropolitan area constitute the premier gateway for legal immigration to the United States. As many as 800 languages are spoken in New York, making it the most linguistically diverse city in the world. New York City is home to more than 3.2 million residents born outside the United States, the largest foreign-born population of any city in the world. In 2017, the New York metropolitan area produced a gross metropolitan product of US$1.73 trillion. If greater New York City were a sovereign state, it would have the 12th highest GDP in the world. New York is home to the highest number of billionaires of any city in the world. New York City traces its origins to a trading post founded by colonists from the Dutch Republic in 1624 on Lower Manhattan.
The city and its surroundings came under English control in 1664 and were renamed New York after King Charles II of England granted the lands to his brother, the Duke of York. New York served as the capital of the United States from 1785 until 1790, it has been the country's largest city since 1790. The Statue of Liberty greeted millions of immigrants as they came to the U. S. by ship in the late 19th and early 20th centuries and is an international symbol of the U. S. and its ideals of liberty and peace. In the 21st century, New York has emerged as a global node of creativity and entrepreneurship, social tolerance, environmental sustainability, as a symbol of freedom and cultural diversity. Many districts and landmarks in New York City are well known, with the city having three of the world's ten most visited tourist attractions in 2013 and receiving a record 62.8 million tourists in 2017. Several sources have ranked New York the most photographed city in the world. Times Square, iconic as the world's "heart" and its "Crossroads", is the brightly illuminated hub of the Broadway Theater District, one of the world's busiest pedestrian intersections, a major center of the world's entertainment industry.
The names of many of the city's landmarks and parks are known around the world. Manhattan's real estate market is among the most expensive in the world. New York is home to the largest ethnic Chinese population outside of Asia, with multiple signature Chinatowns developing across the city. Providing continuous 24/7 service, the New York City Subway is the largest single-operator rapid transit system worldwide, with 472 rail stations. Over 120 colleges and universities are located in New York City, including Columbia University, New York University, Rockefeller University, which have been ranked among the top universities in the world. Anchored by Wall Street in the Financial District of Lower Manhattan, New York has been called both the most economically powerful city and the leading financial center of the world, the city is home to the world's two largest stock exchanges by total market capitalization, the New York Stock Exchange and NASDAQ. In 1664, the city was named in honor of the Duke of York.
James's older brother, King Charles II, had appointed the Duke proprietor of the former territory of New Netherland, including the city of New Amsterdam, which England had seized from the Dutch. During the Wisconsinan glaciation, 75,000 to 11,000 years ago, the New York City region was situated at the edge of a large ice sheet over 1,000 feet in depth; the erosive forward movement of the ice contributed to the separation of what is now Long Island and Staten Island. That action left bedrock at a shallow depth, providing a solid foundation for most of Manhattan's skyscrapers. In the precolonial era, the area of present-day New York City was inhabited by Algonquian Native Americans, including the Lenape, whose homeland, known as Lenapehoking, included Staten Island; the first documented visit into New York Harbor by a European was in 1524 by Giovanni da Verrazzano, a Florentine explorer in the service of the French crown. He named it Nouvelle Angoulême. A Spanish expedition led by captain Estêvão Gomes, a Portuguese sailing for Emperor Charles V, arrived in New York Harbor in January 1525 and charted the mouth of the Hudson River, which he named Río de San Antonio.
The Padrón Rea
Orlando is a city in the U. S. state of Florida and the county seat of Orange County. Located in Central Florida, it is the center of the Orlando metropolitan area, which had a population of 2,509,831, according to U. S. Census Bureau figures released in July 2017; these figures make it the 23rd-largest metropolitan area in the United States, the sixth-largest metropolitan area in the Southern United States, the third-largest metropolitan area in Florida. As of 2015, Orlando had an estimated city-proper population of 280,257, making it the 73rd-largest city in the United States, the fourth-largest city in Florida, the state's largest inland city; the City of Orlando is nicknamed "The City Beautiful," and its symbol is the fountain at Lake Eola. Orlando is known as "The Theme Park Capital of the World" and in 2016 its tourist attractions and events drew more than 72 million visitors; the Orlando International Airport is the thirteenth-busiest airport in the United States and the 29th-busiest in the world.
As one of the world's most visited tourist destinations, Orlando's famous attractions form the backbone of its tourism industry. The two most significant of these attractions are Walt Disney World, opened by the Walt Disney Company in 1971, located 21 miles southwest of Downtown Orlando in Bay Lake. With the exception of Walt Disney World, most major attractions are located along International Drive with one of these attractions being the Orlando Eye; the city is one of the busiest American cities for conferences and conventions. Like other major cities in the Sun Belt, Orlando grew from the 1980s up into the first decade of the 21st century. Orlando is home to the University of Central Florida, the largest university campus in the United States in terms of enrollment as of 2015. In 2010, Orlando was listed as a "Gamma−" level global city in the World Cities Study Group's inventory. Orlando ranks as the fourth-most popular American city based on where people want to live according to a 2009 Pew Research Center study.
Fort Gatlin, as the Orlando area was once known, was established at what is now just south of the city limits by the 4th U. S. Artillery under the command of Ltc. Alexander C. W. Fanning on November 9, 1838, during the construction of a series of fortified encampments across Florida during the Second Seminole War; the fort and surrounding area were named for Dr. John S. Gatlin, an Army physician, killed in Dade's Massacre on December 28, 1835; the site of construction for Fort Gatlin, a defensible position with fresh water between three small lakes, was chosen because the location was on a main trail and is less than 250 yards from a nearby Council Oak tree where Native Americans had traditionally met. King Phillip and Coacoochee frequented this area and the tree was alleged to be the place where the previous 1835 ambush that had killed over 100 soldiers had been planned; when the U. S. military abandoned the fort in 1839, the surrounding community was built up by settlers. Prior to being known by its current name, Orlando was once known as Jernigan.
This name originates from the first permanent settlers and Aaron Jernigan, cattlemen who acquired land two miles northwest of Fort Gatlin along the west end of Lake Holden in July 1843 by the terms of the Armed Occupation Act. Aaron Jernigan became Orange County's first State Representative in 1845 but his pleas for additional military protection went unanswered. Fort Gatlin was reoccupied by the military for a few weeks during October and November 1849 and subsequently a volunteer militia was left to defend the settlement. A historical marker indicates that by 1850 the Jernigan homestead served as the nucleus of a village named Jernigan. According to an account written years by his daughter, at that time, about 80 settlers were forced to shelter for about a year in "a stockade that Aaron Jernigan built on the north side of Lake Conway". One of the county's first records, a grand jury's report, mentions a stockade where it states homesteaders were "driven from their homes and forced to huddle together in hasty defences."
Aaron Jernigan led a local volunteer militia during 1852. A Post Office opened at Jernigan in 1850. Jernigan appears on an 1855 map of Florida and by 1856 the area had become the county seat of Orange County. In 1857, the Post Office was removed from Jernigan, opened under the name of Orlando at a new location in present-day downtown Orlando. During the American Civil War, the Post Office closed, but reopened in 1866; the move is believed to be sparked, in part, by Aaron Jernigan's fall from grace after he was relieved of his militia command by military officials in 1856. His behavior was so notorious that Secretary of War Jefferson Davis wrote, "It is said they are more dreadful than the Indians." In 1859, Jernigan and his sons were accused of committing a murder at the town's post office. They were transported to Ocala, but escaped. There are at least five stories as to; the most common stories are that the name Orlando originated from the tale of a man who died in 1835 during a attack by Native Americans in the area during the Second Seminole War.
Several of the stories relay an oral history of the marker for a person named Orlando, the double entendre, "Here lies Orlando." One variant includes a man named Orlando, passing by on his way to Tampa with a herd of oxen and was buried in a marked grave. At a meeting in 1857, debate had grown concerning the name of the town. Pioneer William B. Hull recalled
Dolphin is a common name of aquatic mammals within the order Cetacea, arbitrarily excluding whales and porpoises. The term dolphin refers to the extant families Delphinidae, Platanistidae and Pontoporiidae, the extinct Lipotidae. There are 40 extant species named as dolphins. Dolphins range in size from the 1.7 m long and 50 kg Maui's dolphin to the 9.5 m and 10 t killer whale. Several species exhibit sexual dimorphism, they have two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at 55.5 km/h. Dolphins use their conical shaped teeth to capture fast moving prey, they have well-developed hearing, adapted for both air and water and is so well developed that some can survive if they are blind. Some species are well adapted for diving to great depths, they have a layer of blubber, under the skin to keep warm in the cold water. Although dolphins are widespread, most species prefer the warmer waters of the tropic zones, but some, like the right whale dolphin, prefer colder climates.
Dolphins feed on fish and squid, but a few, like the killer whale, feed on large mammals, like seals. Male dolphins mate with multiple females every year, but females only mate every two to three years. Calves are born in the spring and summer months and females bear all the responsibility for raising them. Mothers of some species fast and nurse their young for a long period of time. Dolphins produce a variety of vocalizations in the form of clicks and whistles. Dolphins are sometimes hunted in places such as Japan, in an activity known as dolphin drive hunting. Besides drive hunting, they face threats from bycatch, habitat loss, marine pollution. Dolphins have been depicted in various cultures worldwide. Dolphins feature in literature and film, as in the film series Free Willy. Dolphins are sometimes trained to perform tricks; the most common dolphin species in captivity is the bottlenose dolphin, while there are around 60 captive killer whales. The name is from Greek δελφίς, "dolphin", related to the Greek δελφύς, "womb".
The animal's name can therefore be interpreted as meaning "a'fish' with a womb". The name was transmitted via the Latin delphinus, which in Medieval Latin became dolfinus and in Old French daulphin, which reintroduced the ph into the word; the term mereswine has historically been used. The term'dolphin' can be used to refer to, under the parvorder Odontoceti, all the species in the family Delphinidae and the river dolphin families Iniidae, Pontoporiidae and Platanistidae; this term has been misused in the US in the fishing industry, where all small cetaceans are considered porpoises, while the fish dorado is called dolphin fish. In common usage the term'whale' is used only for the larger cetacean species, while the smaller ones with a beaked or longer nose are considered'dolphins'; the name'dolphin' is used casually as a synonym for bottlenose dolphin, the most common and familiar species of dolphin. There are six species of dolphins thought of as whales, collectively known as blackfish: the killer whale, the melon-headed whale, the pygmy killer whale, the false killer whale, the two species of pilot whales, all of which are classified under the family Delphinidae and qualify as dolphins.
Though the terms'dolphin' and'porpoise' are sometimes used interchangeably, porpoises are not considered dolphins and have different physical features such as a shorter beak and spade-shaped teeth. Porpoises share a common ancestry with the Delphinidae. A group of dolphins is called a "school" or a "pod". Male dolphins are called "bulls", females "cows" and young dolphins are called "calves". Parvorder Odontoceti, toothed whales Family Platanistidae Ganges and Indus river dolphin, Platanista gangetica with two subspecies Ganges river dolphin, Platanista gangetica gangetica Indus river dolphin, Platanista gangetica minor Family Iniidae Amazon river dolphin, Inia geoffrensis Orinoco river dolphin, Inia geoffrensis humboldtiana Araguaian river dolphin, Inia Araguaiaensis Bolivian river dolphin, Inia boliviensis Family Lipotidae Baiji, Lipotes vexillifer Family Pontoporiidae La Plata dolphin, Pontoporia blainvillei Family Delphinidae, oceanic dolphins Genus Delphinus Long-beaked common dolphin, Delphinus capensis Short-beaked common dolphin, Delphinus delphis Genus Tursiops Common bottlenose dolphin, Tursiops truncatus Indo-Pacific bottlenose dolphin, Tursiops aduncus Burrunan dolphin, Tursiops australis, a newly discovered species from the sea around Melbourne in September 2011.
Genus Lissodelphis Northern right whale dolphin, Lissodelphis borealis Southern right whale dolphin, Lissodelphis peronii Genus Sotalia Tucuxi, Sotalia fluviatilis Costero, Sotalia guianensis Genus Sousa Indo-Pacific humpback dolphin, Sousa chinensis Chinese white dolphin, Sousa chinensis chinensis Atlantic humpback dolphin, Sousa teuszii Genus Stenella Atlantic spotted dolphin, Stenella frontalis Clymene dolphin, Stenella clymene Pantropical
Cetaceans are aquatic mammals constituting the infraorder Cetacea. There are around 89 living species; the first is the Odontoceti, the toothed whales, which consist of around 70 species, including the dolphin, beluga whale, sperm whale, beaked whale. The second is the Mysticeti, the baleen whales, which have a filter-feeder system, consist of 15 species divided into 3 families, include the right whale, bowhead whale, pygmy right whale, gray whale; the ancient and extinct ancestors of modern whales lived 53 to 45 million years ago. They diverged from even-toed ungulates, they were amphibious, evolved in the shallow waters that separated India from Asia. Around 30 species adapted to a oceanic life. Baleen whales split from toothed whales around 34 million years ago; the smallest cetacean is Maui's dolphin, at 50 kg. Baleen whales have a tactile system in the short hairs around their mouth. Cetaceans have well-developed senses—their eyesight and hearing are adapted for both air and water, they have a layer of blubber, under the skin to maintain body heat in cold water.
Several species exhibit sexual dimorphism. Two external forelimbs are modified into flippers. Cetaceans have streamlined bodies: they can swim quickly, with the killer whale able to travel at 56 kilometres per hour in short bursts, the fin whale able to cruise at 48 kilometres per hour, dolphins able to make tight turns at high speeds, some species diving to great depths. Although cetaceans are widespread, most species prefer the colder waters of the Northern and Southern Hemispheres, they spend their lives in the water of rivers. This has drastically affected their anatomy to be able to do so, they feed on fish and marine invertebrates. Some baleen whales are specialised for feeding on benthic creatures. Male cetaceans mate with more than one female, although the degree of polygyny varies with the species. Cetaceans are not known to have pair bonds. Male cetacean strategies for reproductive success vary between herding females, defending potential mates from other males, or whale song which attracts mates.
Calves are born in the fall and winter months, females bear all the responsibility for raising them. Mothers of some species fast and nurse their young for a short period of time, more typical of baleen whales as their main food source aren't found in their breeding and calving grounds. Cetaceans produce a number of vocalizations, notably the clicks and whistles of dolphins and the moaning songs of the humpback whale; the meat and oil of cetaceans have traditionally been used by indigenous peoples of the Arctic. Cetaceans have been depicted in various cultures worldwide. Dolphins are kept in captivity and are sometimes trained to perform tricks and tasks, other cetaceans aren't as kept in captivity. Cetaceans have been relentlessly hunted by commercial industries for their products, although this is now forbidden by international law; the baiji has become "Possibly Extinct" in the past century, while the vaquita and Yangtze finless porpoise are ranked Critically Endangered by the International Union for Conservation of Nature.
Besides hunting, cetaceans face threats from accidental trapping, marine pollution, ongoing climate change. The two parvorders, baleen whales and toothed whales, are thought to have diverged around thirty-four million years ago. Baleen whales have bristles made of keratin instead of teeth; the bristles filter other small invertebrates from seawater. Grey whales feed on bottom-dwelling mollusks. Rorqual family use throat pleats to expand their mouths to sieve out the water. Balaenids have massive heads. Most mysticetes prefer the food-rich colder waters of the Northern and Southern Hemispheres, migrating to the Equator to give birth. During this process, they are capable of relying on their fat reserves; the parvorder of Odontocetes – the toothed whales – include sperm whales, beaked whales, killer whales and porpoises. The teeth are designed for catching fish, squid or other marine invertebrates, not for chewing them, so prey is swallowed whole. Teeth are shaped like cones, pegs, tusks or variable.
Female beaked whales' teeth are hidden in the gums and are not visible, most male beaked whales have only two short tusks. Narwhals have vestigial teeth other than their tusk, present on males and 15% of females and has millions of nerves to sense water temperature and salinity. A few toothed whales, such as some killer whales, feed on mammals, such as pinnipeds and other whales. Toothed whales have well-developed senses – their eyesight and hearing are adapted for both air and water, they have advan
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents, but can show hybrid vigour, sometimes growing larger or taller than either parent; the concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include morphological differences, differing times of fertility, mating behaviors and cues, physiological rejection of sperm cells or the developing embryo; some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering times, pollen vectors, inhibition of pollen tube growth, somatoplastic sterility, cytoplasmic-genic male sterility and the structure of the chromosomes.
A few animal species and many plant species, are the result of hybrid speciation, including important crop plants such as wheat, where the number of chromosomes has been doubled. Human impact on the environment has resulted in an increase in the interbreeding between regional species, the proliferation of introduced species worldwide has resulted in an increase in hybridisation; this genetic mixing may threaten many species with extinction, while genetic erosion in crop plants may be damaging the gene pools of many species for future breeding. A form of intentional human-mediated hybridisation is the crossing of wild and domesticated species; this is common in modern agriculture. One such flower, Oenothera lamarckiana, was central to early genetics research into mutationism and polyploidy, it is more done in the livestock and pet trades. Human selective breeding of domesticated animals and plants has resulted is the development of distinct breeds. Hybrid humans existed in prehistory. For example and anatomically modern humans are thought to have interbred as as 40,000 years ago.
Mythological hybrids appear in human culture in forms as diverse as the Minotaur, blends of animals and mythical beasts such as centaurs and sphinxes, the Nephilim of the Biblical apocrypha described as the wicked sons of fallen angels and attractive women. The term hybrid is derived from Latin hybrida, used for crosses such as of a tame sow and a wild boar; the term came into popular use in English in the 19th century, though examples of its use have been found from the early 17th century. Conspicuous hybrids are popularly named with portmanteau words, starting in the 1920s with the breeding of tiger–lion hybrids. From the point of view of animal and plant breeders, there are several kinds of hybrid formed from crosses within a species, such as between different breeds. Single cross hybrids result from the cross between two true-breeding organisms which produces an F1 hybrid; the cross between two different homozygous lines produces an F1 hybrid, heterozygous. The F1 generation is phenotypically homogeneous, producing offspring that are all similar to each other.
Double cross hybrids result from the cross between two different F1 hybrids. Three-way cross hybrids result from the cross between an inbred line. Triple cross hybrids result from the crossing of two different three-way cross hybrids. Top cross hybrids result from the crossing of a top quality or pure-bred male and a lower quality female, intended to improve the quality of the offspring, on average. Population hybrids result from the crossing of plants or animals in one population with those of another population; these crosses between different breeds. In horticulture, the term stable hybrid is used to describe an annual plant that, if grown and bred in a small monoculture free of external pollen produces offspring that are "true to type" with respect to phenotype. Hybridisation can occur in the hybrid zones where the geographical ranges of species, subspecies, or distinct genetic lineages overlap. For example, the butterfly Limenitis arthemis has two major subspecies in North America, L. a. arthemis and L. a. astyanax.
The white admiral has a bright, white band on its wings, while the red-spotted purple has cooler blue-green shades. Hybridisation occurs between a narrow area across New England, southern Ontario, the Great Lakes, the "suture region", it is at these regions. Other hybrid zones have formed between described species of animals. From the point of view of genetics, several different kinds of hybrid can be distinguished. A genetic hybrid carries two different alleles of the same gene, where for instance one allele may code for a lighter coat colour than the other. A structural hybrid results from the fusion of gametes that have differing structure in at least one chromosome, as a result of structural abnormalities. A numerical hybrid results from the fusion of gamet
A public aquarium is the aquatic counterpart of a zoo, which houses living aquatic animal and plant specimens for public viewing. Most public aquariums feature tanks larger than those kept by home aquarists, as well as smaller tanks. Since the first public aquariums were built in the mid-19th century, they have become popular and their numbers have increased. Most modern accredited aquariums stress conservation issues and educating the public; the first public aquarium was opened in London Zoo in May 1853. P. T. Barnum followed in 1856 with the first American aquarium as part of his established Barnum's American Museum, located on Broadway in New York City before it burned down. In 1859, the Aquarial Gardens were founded in Boston. A number of aquariums opened in Europe, such as the Jardin d'Acclimatation in Paris and the Viennese Aquarium Salon, the Marine Aquarium Temple as part of the Zoological Garden in Hamburg, as well as aquariums in Berlin and Brighton; the old Berlin Aquarium opened in 1869.
The building site was to be Unter den Linden, in the centre of town, not at the Berlin Zoo. The aquarium's first director, Alfred Brehm, former director of the Hamburg Zoo from 1863 to 1866, served until 1874. With its emphasis on education, the public aquarium was designed like a grotto, part of it made of natural rock; the Geologische Grotte depicted "the strata of the earth's crust". The grotto featured birds and pools for seals; the Aquarium Unter den Linden was a three-story building. Machinery and water tanks were on aquarium basins for the fish on the first floor; because of Brehm's special interest in birds, a huge aviary, with cages for mammals placed around it, was located on the second floor. The facility closed in 1910; the Artis aquarium at Amsterdam Zoo was constructed inside a Victorian building in 1882, was renovated in 1997. At the end of the 19th century the Artis aquarium was considered state-of-the-art, as it was again at the end of the 20th century. Prior to its closing on September 30, 2013, the oldest American aquarium was the National Aquarium in Washington, D.
C. founded in 1873. This was followed by the opening of other public aquariums: San Francisco, Woods Hole, New York, La Jolla, Detroit, San Francisco, Chicago. For many years, the Shedd Aquarium was the largest aquarium in the United States until the Georgia Aquarium in Atlanta opened 2005. Entertainment and aquatic circus exhibits were combined as themes in Philadelphia's Aquarama Aquarium Theater of the Sea and Camden's re-invented Adventure Aquarium 2005 the New Jersey State Aquarium; the first Japanese public aquarium, a small freshwater aquarium, was opened at the Ueno Zoo in 1882. In 2005, the Georgia Aquarium, with more than 8 million U. S. gallons of marine and fresh water, more than 100,000 animals of 500 different species opened in Atlanta, Georgia. The aquarium's notable specimens include whale sharks and beluga whales. Modern aquarium tanks can hold millions of litres of water and can house large species, including dolphins, sharks or beluga whales; this is accomplished through clear acrylic glass windows.
Aquatic and semiaquatic mammals, including otters and seals are cared for at aquariums. Some establishments, such as the Oregon Coast Aquarium or the Monterey Bay Aquarium, have aquatic aviaries. Modern aquariums include land animals and plants that spend time in or near the water. For marketing purposes, many aquariums promote special exhibits, in addition to their permanent collections; some have aquatic versions of a petting zoo. The Monterey Bay Aquarium has a shallow tank filled with common types of rays which visitors are encouraged to touch; the South Carolina Aquarium lets visitors feed the rays in their Saltmarsh Aviary exhibit. Most public aquariums are located close to the ocean, for a steady supply of natural seawater. An inland pioneer was Chicago's Shedd Aquarium that received seawater shipped by rail in special tank cars; the early Philadelphia Aquarium, built in the city's disused water works, had to switch to treated city water when the nearby river became too contaminated. The opened Georgia Aquarium filled its tanks with fresh water from the city water system and salinated its salt water exhibits using the same commercial salt and mineral additives available to home aquarists.
The South Carolina Aquarium pulls the salt water for their exhibits right out of the Charleston harbor. In January 1985, Kelly Tarlton began construction of the first aquarium to include a large transparent acrylic tunnel, Kelly Tarlton's Underwater World in Auckland, New Zealand. Construction cost NZ$3 million; the 110-metre tunnel was built from one-tonne slabs of German sheet plastic that were shaped locally in an oven. A moving walkway now transports visitors through, groups of school children hold sleepovers there beneath the swimming sharks and rays. Public aquariums are affiliated with oceanographic research institutions or conduct their own research programs, sometimes specialize in species and ecosystems that can be found in local waters. For example, the Vancouver Aquarium in Vancouver, BC is a major center for marine research and marine animal rehabilitation, particularly
Chicago the City of Chicago, is the most populous city in Illinois, as well as the third most populous city in the United States. With an estimated population of 2,716,450, it is the most populous city in the Midwest. Chicago is the principal city of the Chicago metropolitan area referred to as Chicagoland, the county seat of Cook County, the second most populous county in the United States; the metropolitan area, at nearly 10 million people, is the third-largest in the United States, the fourth largest in North America and the third largest metropolitan area in the world by land area. Located on the shores of freshwater Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed and grew in the mid-nineteenth century. After the Great Chicago Fire of 1871, which destroyed several square miles and left more than 100,000 homeless, the city made a concerted effort to rebuild; the construction boom accelerated population growth throughout the following decades, by 1900 Chicago was the fifth largest city in the world.
Chicago made noted contributions to urban planning and zoning standards, including new construction styles, the development of the City Beautiful Movement, the steel-framed skyscraper. Chicago is an international hub for finance, commerce, technology, telecommunications, transportation, it is the site of the creation of the first standardized futures contracts at the Chicago Board of Trade, which today is the largest and most diverse derivatives market gobally, generating 20% of all volume in commodities and financial futures. O'Hare International Airport is the one of the busiest airports in the world, the region has the largest number of U. S. highways and greatest amount of railroad freight. In 2012, Chicago was listed as an alpha global city by the Globalization and World Cities Research Network, it ranked seventh in the entire world in the 2017 Global Cities Index; the Chicago area has one of the highest gross domestic products in the world, generating $680 billion in 2017. In addition, the city has one of the world's most diversified and balanced economies, not being dependent on any one industry, with no single industry employing more than 14% of the workforce.
Chicago's 58 million domestic and international visitors in 2018, made it the second most visited city in the nation, behind New York City's approximate 65 million visitors. The city ranked first place in the 2018 Time Out City Life Index, a global quality of life survey of 15,000 people in 32 cities. Landmarks in the city include Millennium Park, Navy Pier, the Magnificent Mile, the Art Institute of Chicago, Museum Campus, the Willis Tower, Grant Park, the Museum of Science and Industry, Lincoln Park Zoo. Chicago's culture includes the visual arts, film, comedy and music jazz, soul, hip-hop and electronic dance music including house music. Of the area's many colleges and universities, the University of Chicago, Northwestern University, the University of Illinois at Chicago are classified as "highest research" doctoral universities. Chicago has professional sports teams in each of the major professional leagues, including two Major League Baseball teams; the name "Chicago" is derived from a French rendering of the indigenous Miami-Illinois word shikaakwa for a wild relative of the onion, known to botanists as Allium tricoccum and known more as ramps.
The first known reference to the site of the current city of Chicago as "Checagou" was by Robert de LaSalle around 1679 in a memoir. Henri Joutel, in his journal of 1688, noted that the eponymous wild "garlic" grew abundantly in the area. According to his diary of late September 1687:...when we arrived at the said place called "Chicagou" which, according to what we were able to learn of it, has taken this name because of the quantity of garlic which grows in the forests in this region. The city has had several nicknames throughout its history such as the Windy City, Chi-Town, Second City, the City of the Big Shoulders, which refers to the city's numerous skyscrapers and high-rises. In the mid-18th century, the area was inhabited by a Native American tribe known as the Potawatomi, who had taken the place of the Miami and Sauk and Fox peoples; the first known non-indigenous permanent settler in Chicago was Jean Baptiste Point du Sable. Du Sable arrived in the 1780s, he is known as the "Founder of Chicago".
In 1795, following the Northwest Indian War, an area, to be part of Chicago was turned over to the United States for a military post by native tribes in accordance with the Treaty of Greenville. In 1803, the United States Army built Fort Dearborn, destroyed in 1812 in the Battle of Fort Dearborn and rebuilt; the Ottawa and Potawatomi tribes had ceded additional land to the United States in the 1816 Treaty of St. Louis; the Potawatomi were forcibly removed from their land after the Treaty of Chicago in 1833. On August 12, 1833, the Town of Chicago was organized with a population of about 200. Within seven years it grew to more than 4,000 people. On June 15, 1835, the first public land sales began with Edmund Dick Taylor as U. S. Receiver of Public Monies; the City of Chicago was incorporated on Saturday, March 4, 1837, for several decades was the world's fastest-growing city. As the site of the Chicago Portage, the city became an important transportation hub between the eastern and western United States.
Chicago's first railway and Chicago Union Railroad, the Illi