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Palos Trail System
The Palos Forest Preserves are 15,000 acres of forest preserves in the Forest Preserve District of Cook County, located principally in Palos Township, Illinois. During the 1930s, the area of the Palos Preserves south of Archer was known as the Argonne Forest. This commemorated the battleground of the Meuse–Argonne offensive where over one million Americans fought during World War I. During World War II, Argonne Forest land leased to the Army Corps of Engineers became Site A, a research facility where experimental nuclear reactors built for the Manhattan Project helped in the development of the first nuclear weapons. The Argonne Forest area is known to geologists as Mount Forest Island, an area which, during the Last Glacial Period, formed a triangular island long and wide, rising above the waters of the surrounding ice-age Lake Chicago.Epoch of glacial retreat:Chicago/ref> The Palos Preserves feature the Palos Trail System, the forest district's largest multi-trail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cook County
Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40% of all residents of Illinois live within Cook County. As of 2020, the population was 5,275,541. Its county seat is Chicago, the most populous city in Illinois and the third-most-populous city in the United States. Cook County was incorporated in 1831 and named for Daniel Pope Cook, an early Illinois statesman. It achieved its present boundaries in 1839. Within one hundred years, the county recorded explosive population growth going from a trading post village with a little over 600 residents to four million citizens, rivalling Paris by the Great Depression. During the first half of the 20th century it had the absolute majority of Illinois's population. There are more than 800 local governmental units and nearly 130 municipalities located wholly or partially within Cook County, the largest of whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Dark-Sky Association
The International Dark-Sky Association (IDA) is a United States-based non-profit organization incorporated in 1988 by founders David Crawford, a professional astronomer, and Tim Hunter, a physician/amateur astronomer. The mission of the IDA is "to preserve and protect the night time environment and our heritage of dark skies through quality outdoor lighting." Light pollution is the result of outdoor lighting that is not properly shielded, allowing light shine into the eyes and night sky. Direct light that shines into the eyes is called glare, and light directed into the night sky above the horizon causes skyglow. Lighting can also cause light trespass when it enters areas where unwanted (e.g. a neighbor's yard and windows). IDA was the first organization in the dark-sky movement, and is currently the largest. Principal approach IDA's principal approach is to raise awareness about the value of dark, star-filled night skies and encourage their protection and restoration through e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Chicago
The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park neighborhood. The University of Chicago is consistently ranked among the best universities in the world and it is among the most selective in the United States. The university is composed of an undergraduate college and five graduate research divisions, which contain all of the university's graduate programs and interdisciplinary committees. Chicago has eight professional schools: the Law School, the Booth School of Business, the Pritzker School of Medicine, the Crown Family School of Social Work, Policy, and Practice, the Harris School of Public Policy, the Divinity School, the Graham School of Continuing Liberal and Professional Studies, and the Pritzker School of Molecular Engineering. The university has additional campuses and centers in London, Paris, Beijing, Delhi, and Hong Kong, as well as in downtown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of weapons-grade plutonium. , the International Atomic Energy Agency reports there are 422 nuclear power reactors and 223 nuclear research reactors in operation around the world. In the early era of nuclear reactors (1940s), a reactor was known as a nuclear pile or atomic pile (so-called because the graphite moderator blocks of the first reactor were placed into a tall pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Pile-1
Chicago Pile-1 (CP-1) was the world's first artificial nuclear reactor. On 2 December 1942, the first human-made self-sustaining nuclear chain reaction was initiated in CP-1, during an experiment led by Enrico Fermi. The secret development of the reactor was the first major technical achievement for the Manhattan Project, the Allied effort to create atomic bombs during World War II. Developed by the Metallurgical Laboratory at the University of Chicago, CP-1 was built under the west viewing stands of the original Stagg Field. Although the project's civilian and military leaders had misgivings about the possibility of a disastrous runaway reaction, they trusted Fermi's safety calculations and decided they could carry out the experiment in a densely populated area. Fermi described the reactor as "a crude pile of black bricks and wooden timbers". The reactor was assembled in November 1942, by a team that included Fermi, Leo Szilard (who had previously formulated an idea for no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowing
Rowing is the act of propelling a human-powered watercraft using the sweeping motions of oars to displace water and generate reactional propulsion. Rowing is functionally similar to paddling, but rowing requires oars to be mechanically attached to the boat, and the rower drives the oar like a lever, exerting force in the ''same'' direction as the boat's travel; while paddles are completely hand-held and have no attachment to the boat, and are driven like a cantilever, exerting force ''opposite'' to the intended direction of the boat. In some strict terminologies, using oars for propulsion may be termed either "pulling" or "rowing", with different definitions for each. Where these strict terminologies are used, the definitions are reversed depending on the context. On saltwater a "pulling boat" has each person working one oar on one side, alternating port and starboard along the length of the boat; whilst "rowing" means each person operates two oars, one on each side of the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canoe
A canoe is a lightweight narrow water vessel, typically pointed at both ends and open on top, propelled by one or more seated or kneeling paddlers facing the direction of travel and using a single-bladed paddle. In British English, the term ''canoe'' can also refer to a kayak, while canoes are called Canadian or open canoes to distinguish them from kayaks. Canoes were developed by cultures all over the world, including some designed for use with sails or outriggers. Until the mid-19th century, the canoe was an important means of transport for exploration and trade, and in some places is still used as such, sometimes with the addition of an outboard motor. Where the canoe played a key role in history, such as the Northern United States, Canada, and New Zealand, it remains an important theme in popular culture. Canoes are now widely used for competition and pleasure, such as racing, whitewater, touring and camping, freestyle and general recreation. Canoeing has been part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saganashkee Slough
Saganashkee Slough is a 377-acre, manmade riparian lake that forms part of the valley of the Cal-Sag Channel. It is located in the Palos Forest Preserve of Cook County, Illinois, on wetland that was drained but was later reverted to a lake starting in 1948-1949 by the construction of dams and levees. Saganashkee Slough, like other segments of the Cal-Sag canal and valley system, drains into the Des Plaines River and ultimately into the Illinois River. Backwater lake and fish Like other backwater lakes in the Palos Forest Preserve system, the Saganashkee Slough is noted for birdwatching and fish. The Forest Preserve District of Cook County states that loons, herons, grebes, mergansers, and many other types of waterfowl have been seen at or flying over the slough. Fish listed by the Forest Preserve District include the bullhead, crappie, various types of catfish, largemouth bass, yellow bass, and northern pike The northern pike (''Esox lucius'') is a species of carnivorou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kayak
A kayak is a small, narrow watercraft which is typically propelled by means of a double-bladed paddle. The word kayak originates from the Greenlandic word ''qajaq'' (). The traditional kayak has a covered deck and one or more cockpits, each seating one paddler. The cockpit is sometimes covered by a spray deck that prevents the entry of water from waves or spray, differentiating the craft from a canoe. The spray deck makes it possible for suitably skilled kayakers to roll the kayak: that is, to capsize and right it without it filling with water or ejecting the paddler. ] Some modern boats vary considerably from a traditional design but still claim the title "kayak", for instance in eliminating the cockpit by seating the paddler on top of the boat ("sit-on-top" kayaks); having inflated air chambers surrounding the boat; replacing the single hull with twin hulls; and replacing paddles with other human-powered propulsion methods, such as foot-powered rotational propellers and "fli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willow Springs, Illinois
Willow Springs is a village in Cook County, Illinois, with a small portion in DuPage County. The village was founded in 1892, and was named for the springs along the Des Plaines River. Per the 2020 census, the population was 5,857. Geography Willow Springs is located on the banks of the Des Plaines River and the Chicago Sanitary and Ship Canal. According to the 2010 census, Willow Springs has a total area of , of which (or 97.42%) is land and (or 2.58%) is water. Demographics 2020 census ''Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.'' 2000 Census As of the census of 2000, there were 5,027 people, 1,948 households, and 1,381 families living in the village. The population density was 1,299.8 people per square mile (501.5/km2). There were 1,991 housing units at an average density of 514.8 per square mile (198.6/km2). The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hickory Hills, Illinois
Hickory Hills is a city in Cook County, Illinois. Located principally in Palos Township, it is a suburb of Chicago. The population in 2020 was 14,505. History The Hickory Hills Country Club was founded in 1917 in the area of the present-day city, with an 18-hole golf course designed by Scottish-American golfer James Foulis. The club exists to the present day. The village of Hickory Hills was incorporated in September 1951 from the territory between 91st to 95th streets, and between 80th to 88th avenue. The village at the time of incorporation had around 450 residents. Voters approved a change from village to city form of government in October 1966. In 1961, the Poor Clares nuns, a branch of the Franciscan order, acquired 20 acres of land at 89th street and Keane avenue with which to establish a new monastery. However, the monastery closed in 1992 due to dwindling numbers. The order returned to Chicago in 1999, moving to a new monastery in nearby Palos Park in 2003. Geogr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palos Park, Illinois
Palos Park is a village in southwestern Cook County, Illinois, United States. Per the 2020 census, the population was 4,899. Geography Palos Park is located at (41.665682, -87.836633). According to the 2021 census gazetteer files, Palos Park has a total area of , of which (or 98.16%) is land and (or 1.84%) is water. Demographics As of the 2020 census there were 4,899 people, 2,104 households, and 1,370 families residing in the village. The population density was . There were 2,023 housing units at an average density of . The racial makeup of the village was 88.32% White, 1.43% African American, 0.16% Native American, 2.10% Asian, 0.04% Pacific Islander, 2.14% from other races, and 5.80% from two or more races. Hispanic or Latino of any race were 7.06% of the population. There were 2,104 households, out of which 35.55% had children under the age of 18 living with them, 59.70% were married couples living together, 4.13% had a female householder with no husband present, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
