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Karns, Pennsylvania
Karns is an unincorporated area, unincorporated community in Harrison Township, Allegheny County, Pennsylvania, Harrison Township, Allegheny County, Pennsylvania, Allegheny County, Pennsylvania, United States; it is located in Western Pennsylvania within the Pittsburgh metropolitan area, Pittsburgh Metropolitan Statistical Area, approximately northeast of Pittsburgh. Karns is situated along the Allegheny River at Stream pool, Pool 4 across from Jacks Island (Pennsylvania), Jacks Island just above Lock (water transport), Lock and Dam 4 between Natrona, Pennsylvania, Natrona, Natrona Heights, Pennsylvania, Natrona Heights, and Sligo. The elevation of Karns is 817 feet above sea level. The postal ZIP code is 15065, while the telephone area codes are Area code 724, 724 and Area code 878, 878; although the code ''878'' is not used. History The Pennsylvania Railroad ran through Karns, which had a small station; nearby stations were also at Sligo and Natrona. Education The community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Of America
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natrona, Pennsylvania
Natrona is an unincorporated community in Harrison Township, Allegheny County in the U.S. state of Pennsylvania. It is located in western Pennsylvania within the Pittsburgh Metropolitan Statistical Area, approximately northeast of Downtown Pittsburgh. Natrona is situated along the Allegheny River at Lock and Dam Four, Pools Three and Four between Brackenridge, Natrona Heights, Karns, Allegheny Township, and Lower Burrell. History The original village of Natrona – then known as East Tarentum – was built as a company town by the Pennsylvania Salt Manufacturing Company in the 1850s. The company began with two salt wells in 1850, and continued operations until 1959. By 1876, the company, which owned the cryolite deposits of Greenland, brought the crude mineral to its works in Natrona, where the mineral was pulverized, sifted, heated, reacted with calcium carbonate and leached to produce pure carbonate of soda (sodium carbonate) and aluminate of soda (sodium alumina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromium
Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium metal is valued for its high corrosion resistance and hardness. A major development in steel production was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Stainless steel and chrome plating (electroplating with chromium) together comprise 85% of the commercial use. Chromium is also greatly valued as a metal that is able to be highly polished while resisting tarnishing. Polished chromium reflects almost 70% of the visible spectrum, and almost 90% of infrared light. The name of the element is derived from the Greek word χρῶμα, ''chrōma'', meaning color, because many chromium compounds are intensely colored. Industrial production of chromium proceeds from chromite ore (mostly FeCr2O4) to produce ferro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Pollution
Air pollution is the contamination of air due to the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types of air pollutants, such as gases (including ammonia, carbon monoxide, sulfur dioxide, nitrous oxides, methane, carbon dioxide and chlorofluorocarbons), particulates (both organic and inorganic), and biological molecules. Air pollution can cause diseases, allergies, and even death to humans; it can also cause harm to other living organisms such as animals and food crops, and may damage the natural environment (for example, climate change, ozone depletion or habitat degradation) or built environment (for example, acid rain). Air pollution can be caused by both human activities and natural phenomena. Air pollution is a significant risk factor for a number of pollution-related diseases, including respiratory infections, heart disease, COPD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highlands High School (Natrona Heights, Pennsylvania)
Highlands High School is a suburban, public secondary school in the Natrona Heights neighborhood of Harrison Township in the U.S. state of Pennsylvania. It is part of the Highlands School District and has a current enrollment of about 800 students in grades nine through twelve. Extracurriculars The district offers a variety of clubs, activities and sports. Highlands School District is a member of the WPIAL and PIAA. Highlands School District teams compete at the class AAA or AA level. The district offers the following sports programs: * Boys - baseball 9-12, basketball 7-12, cross country 9-12, marching band 9-12, football 7-12, golf 9-12, soccer 7-12, swimming 9-12, tennis 9-12, track & field 7-12, wrestling 9-12 * Girls - basketball 7-12, cross country 9-12, marching band (sometimes 8 but usually) 9-12, soccer 7-12, softball 7-12, swimming 9-12, tennis 9-12, track & field 7-12, volleyball 9-12 Notable alumni * Cookie Gilchrist, former NFL player * Dick Modzelewski, former ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highlands School District (Pennsylvania)
The Highlands School District is a small, suburban public school district covering Tarentum and Brackenridge boroughs, as well as Fawn and Harrison townships in Allegheny County, in the U.S. state of Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, .... Highlands School District encompasses approximately 22 square miles. According to 2000 federal census data, it serves a resident population of 21,974. In 2009 the per capita income was $17,481, while the median family income was $40,715. In July 2011, the school board voted to rename the districts' elementary schools and to realign attendance zones accordingly. The goals were to equalize student distribution between primary centers, reduce bus time and save money. The district operates both Highlands High School (9– ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Community
A community is a social unit (a group of living things) with commonality such as place, norms, religion, values, customs, or identity. Communities may share a sense of place situated in a given geographical area (e.g. a country, village, town, or neighbourhood) or in virtual space through communication platforms. Durable good relations that extend beyond immediate genealogical ties also define a sense of community, important to their identity, practice, and roles in social institutions such as family, home, work, government, society, or humanity at large. Although communities are usually small relative to personal social ties, "community" may also refer to large group affiliations such as national communities, international communities, and virtual communities. The English-language word "community" derives from the Old French ''comuneté'' (Modern French: ''communauté''), which comes from the Latin ''communitas'' "community", "public spirit" (from Latin '' communis'', "co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania Railroad
The Pennsylvania Railroad (reporting mark PRR), legal name The Pennsylvania Railroad Company also known as the "Pennsy", was an American Class I railroad that was established in 1846 and headquartered in Philadelphia, Pennsylvania. It was named for the commonwealth in which it was established. By 1882, Pennsylvania Railroad had become the largest railroad (by traffic and revenue), the largest transportation enterprise, and the largest corporation in the world. Its budget was second only to the U.S. government. Over the years, it acquired, merged with, or owned part of at least 800 other rail lines and companies. At the end of 1926, it operated of rail line;This mileage includes companies independently operated. PRR miles of all tracks, which includes first (or main), second, third, fourth, and sidings, totalled 28,040.49 at the end of 1926. in the 1920s, it carried nearly three times the traffic as other railroads of comparable length, such as the Union Pacific and Atchison, T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 878
Area code 878 is an overlay area code in Southwestern Pennsylvania, centered in Pittsburgh. It simultaneously overlays the region's two existing area codes, 412 and 724, making ten-digit dialing mandatory in the Pittsburgh area. 412 had served southwestern Pennsylvania for 41 years before 724 was created for most of the old 412 territory outside of Pittsburgh in 1998. Bell Atlantic (now part of Verizon), the main telephone provider in the area, wanted to implement 724 as an overlay to spare residents and businesses the burden of changing their numbers. However, overlays were still a new concept at the time, and met with considerable resistance due to the need for ten-digit dialing. Thus, the proposal was changed to a geographic split. Within two years, however, both 412 and 724 were on the verge of exhaustion. Overlays had gained more acceptance by then, so 878 was implemented as an overlay. It came into effect on August 17, 2001. Although ten-digit dialing has been mandator ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Area Code 724
Area code 724 is a Commonwealth of Pennsylvania telephone area code in western and southwestern Pennsylvania, including most of the suburbs of Pittsburgh. It was split from area code 412 on February 1, 1998. Originally, Bell Atlantic wanted to implement 724 as an overlay of 412. However, overlays were still a new concept at the time, and met with some resistance due to the requirement for ten-digit dialing. For this reason, 724 was implemented as a split, with nearly all of the old 412 territory outside Allegheny County getting the new area code, making it one of the six pairs of "doughnut area codes" in the numbering plan. Within only two years, both 724 and 412 were on the verge of exhaustion due to the Pittsburgh area's rapid growth and the proliferation of cell phones and pagers. By this time, overlays had gained more acceptance, and area code 878 was implemented as an overlay for both the 412 and 724 territories on August 17, 2001. Since that date, ten-digit dialing has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead the midpoint between a mean low and mean high tide at a particular location. Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. Current sea level rise is mainly caused by human-induced climate change. When temperatures rise, Glacier, mountain glaciers and the Ice sheet, polar ice caps melt, increasing the amount of water in water bodies. Because most of human settlem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
