Twin cities

Twin cities are a special case of two cities or urban centres that are founded in close geographic proximity and then grow into each other over time, losing most of their mutual buffer zone. In the United States, "the Twin Cities" usually refers to the Minneapolis-Saint Paul metropolitan area in Minnesota.

There are no precise criteria for twin-cityhood, but to be considered twin cities, the cities involved have to have a similar administrative status and somewhat comparable sizes; a suburb of a much larger population center is usually not considered to form a twin city with it. For example, South San Francisco (population about 65,000) is not considered a twin city with San Francisco (population about 850,000). However, cities considered twinned by proximity do not necessarily match demographically, economically, or politically.

In many historical cases, cities that grew into each other's space lost their individual identities, and the border or barrier originally separating them became almost irrelevant. An 1873 case of twin cities merging to become a united city is Budapest in Hungary, which began as two settlements (Buda and Pest) facing each other across the Danube at a strategic fording place along a trade route. In China, the three ancient cities of Hankou, Hanyang, and Wuchang, separated by the junction of the Yangtze and Hanjiang rivers, were joined in 1927 into the single entity of Wuhan.

Minneapolis–Saint Paul

Minneapolis–Saint Paul is a major metropolitan area built around the Mississippi, Minnesota and St. Croix rivers. The area is commonly known as the Twin Cities for its two largest cities, Minneapolis the city with the highest population in Minnesota and Saint Paul, the state capital. It is a classic example of twin cities in the sense of geographical proximity. Together the two cities anchor the second-largest economic center in the Midwest, behind Chicago.

There are several different definitions of the region. Many refer to the Twin Cities as the seven-county region which is governed under the Metropolitan Council regional governmental agency and planning organization. The United States Office of Management and Budget officially designates 16 counties as the Minneapolis-St. Paul–Bloomington MN-WI Metropolitan Statistical Area, the 16th largest in the United States. The entire region known as the Minneapolis-St. Paul MN-WI Combined Statistical Area, has a population of 3,797,883, the 14th largest, according to 2013 Census estimates.

Real Steel

Real Steel is a 2011 American science fiction sports drama film starring Hugh Jackman and Dakota Goyo, co-produced and directed by Shawn Levy for DreamWorks Pictures. The film is based on the short story "Steel", written by Richard Matheson, which was originally published in the May 1956 edition of The Magazine of Fantasy & Science Fiction, and later adapted into a 1963 Twilight Zone episode, though screenwriter John Gatins placed the film in U.S. state fairs and other "old-fashioned" Americana settings. Real Steel was in development for several years before production began on June 24, 2010. Filming took place primarily in the U.S. state of Michigan. Animatronic robots were built for the film, and motion capture technology was used to depict the brawling of computer-generated robots and animatronics.

Real Steel was theatrically released by Touchstone Pictures in Australia on October 6, 2011, and in the United States and Canada on October 7, 2011, grossing nearly $300 million at the box office and received mixed reviews; with criticism for the formulaic nature of the plot and that elements remained unresolved or were predictable, but yet praise to the visual effects, action sequences and acting performances. The film was nominated for the Academy Award for Best Visual Effects at the 84th Academy Awards, but lost to Hugo.

Twin

Twins are two offspring produced by the same pregnancy. Twins can either be monozygotic ("identical"), meaning that they can develop from just one zygote that will then split and form two embryos, or dizygotic ("fraternal"), meaning that they can develop from two different eggs; each are fertilized by separate sperm cells.

In contrast, a fetus which develops alone in the womb is called a singleton, and the general term for one offspring of a multiple birth is multiple.

Statistics

The twin birth rate in the United States rose 76% from 1980 through 2009, from 18.9 to 33.3 per 1,000 births. The Yoruba have the highest rate of twinning in the world, at 45–50 twin sets (or 90–100 twins) per 1,000 live births, possibly because of high consumption of a specific type of yam containing a natural phytoestrogen which may stimulate the ovaries to release an egg from each side.

In Central Africa there are 18–30 twin sets (or 36–60 twins) per 1,000 live births. In Latin America, South Asia, and Southeast Asia, the lowest rates are found; only 6 to 9 twin sets per 1,000 live births. North America and Europe have intermediate rates of 9 to 16 twin sets per 1,000 live births.

City

A city is a large and permanent human settlement. Although there is no agreement on how a city is distinguished from a town in general English language meanings, many cities have a particular administrative, legal, or historical status based on local law.

Cities generally have complex systems for sanitation, utilities, land usage, housing, and transportation. The concentration of development greatly facilitates interaction between people and businesses, benefiting both parties in the process, but it also presents challenges to managing urban growth.

A big city or metropolis usually has associated suburbs and exurbs. Such cities are usually associated with metropolitan areas and urban areas, creating numerous business commuters traveling to urban centers for employment. Once a city expands far enough to reach another city, this region can be deemed a conurbation or megalopolis. In terms of population, the largest city proper is Shanghai, while the fastest-growing is Dubai.

Origins

There is not enough evidence to assert what conditions gave rise to the first cities. Some theorists have speculated on what they consider suitable pre-conditions and basic mechanisms that might have been important driving forces.