Area 51 is the common name of a highly classified United States Air Force (USAF) facility located within the Nevada Test and Training Range. Officially, the facility is called Homey Airport (KXTA) or Groom Lake, named after the salt flat situated next to its airfield. Although details of the facility's operations are not publicly known, the USAF says it is an open training range, and it most likely supports the development and testing of experimental aircraft and weapons systems, based on historical evidence. The USAF acquired the site in 1955, primarily for flight testing the Lockheed U-2 aircraft.
A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health.
A ZIP Code is a postal code used by the United States Postal Service (USPS). Introduced in 1963, the basic format consists of five digits. In 1983, an extended ZIP+4 code was introduced; it includes the five digits of the ZIP Code, followed by a hyphen and four digits that designate a more specific location.
A metropolitan area is a region consisting of a densely populated urban core and its less-populated surrounding territories, sharing industry, infrastructure, and housing. A metro area usually comprises multiple jurisdictions and municipalities: neighborhoods, townships, boroughs, cities, towns, exurbs, suburbs, counties, districts, states, and even nations like the eurodistricts. As social, economic and political institutions have changed, metropolitan areas have become key economic and political regions.
Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, and most of the time to humans. It is a key geographical term. In simple terms population density refers to the number of people living in an area per kilometer square.
In general, a rural area or countryside is a geographic area that is located outside towns and cities. The Health Resources and Services Administration of the U.S. Department of Health and Human Services defines the word rural as encompassing "...all population, housing, and territory not included within an urban area. Whatever is not urban is considered rural."
In law, an unincorporated area is a region of land that is not governed by a local municipal corporation; similarly an unincorporated community is a settlement that is not governed by its own local municipal corporation, but rather is administered as part of larger administrative divisions, such as a township, parish, borough, county, city, canton, state, province or country. Occasionally, municipalities dissolve or disincorporate, which may happen if they become fiscally insolvent, and services become the responsibility of a higher administration. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. In most other countries of the world, there are either no unincorporated areas at all, or these are very rare; typically remote, outlying, sparsely populated or uninhabited areas.
The Chicago metropolitan area, or Chicagoland, is the metropolitan area that includes the city of Chicago, Illinois, and its suburbs. With an estimated CSA population of 9.9 million people and an MSA population of 9.5 million people, it is the third largest metropolitan area in the United States.
The ceremonial counties, also referred to as the lieutenancy areas of England, are areas of England to which a lord-lieutenant is appointed. Legally, the areas in England, as well as in Wales and Scotland, are defined by the Lieutenancies Act 1997 as "counties and areas for the purposes of the lieutenancies in Great Britain", in contrast to the areas used for local government. They are also informally known as "geographic counties", as often representing more permanent features of English geography, and to distinguish them from other types of counties of England which have a present-day administrative function.
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of administrative regions of the public switched telephone network (PSTN) and they are also present in private telephone networks. For public number systems, geographic location plays a role in the sequence of numbers assigned to each telephone subscriber.
An urban area, or urban agglomeration, is a human settlement with high population density and infrastructure of built environment. Urban areas are created through urbanization and are categorized by urban morphology as cities, towns, conurbations or suburbs. In urbanism, the term contrasts to rural areas such as villages and hamlets and in urban sociology or urban anthropology it contrasts with natural environment. The creation of early predecessors of urban areas during the urban revolution led to the creation of human civilization with modern urban planning, which along with other human activities such as exploitation of natural resources leads to human impact on the environment.
The Schengen Area is an area comprising 26 European states that have officially abolished all passport and all other types of border control at their mutual borders. The area mostly functions as a single jurisdiction for international travel purposes, with a common visa policy. The area is named after the 1985 Schengen Agreement.
The San Francisco Bay Area is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in the northern part of the U.S. state of California. Although the exact boundaries of the region vary depending on the source, the Bay Area is defined by the Association of Bay Area Governments to include the nine counties that border the aforementioned estuaries: Alameda, Contra Costa, Marin, Napa, San Mateo, Santa Clara, Solano, Sonoma, and San Francisco. Other sources may exclude parts of or even entire counties, or expand the definition to include neighboring counties that don't border the bay such as San Benito, San Joaquin, and Santa Cruz.
Storm Area 51, They Can't Stop All of Us is a Facebook event planned for September 20, 2019, at Area 51, a United States Air Force (USAF) facility within the Nevada Test and Training Range, to raid the site in search for extraterrestrial life. The event was created by Matty Roberts, who confirmed it was comedic and disavowed responsibility for any casualties if people actually attempt to raid the military base. Roberts posted the event on June 27, 2019. Over 2 million people have responded "going" and 1.5 million "interested" on the event's page. The event and the music festival planned in conjunction was canceled due to poor planning, concerns of safety and legality, and lack of infrastructure, which Roberts announced on his “Alienstock” website.
