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Palos Forest Preserves
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 s ... [...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 percent of all residents of Illinois live within Cook County. the population was 5,275,541. The county seat is Chicago, the most populous city in Illinois and the third most populous city in the United States. The county is at the center of the Chicago metropolitan area. Cook county is also the sixth largest county in Illinois by area. Cook County was incorporated in 1831 and named for Daniel Pope Cook, an early Illinois statesman. It achieved its present boundaries in 1839. Within a century, the county recorded explosive population growth, going from a trading post village with a little over six hundred residents to four million, rivaling 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Dark-Sky Association
DarkSky International, formerly the International Dark-Sky Association (IDA), is a United States–based nonprofit organization incorporated in 1988 by founders David Crawford, a professional astronomer, and Tim Hunter, a physician and amateur astronomer. The mission of DarkSky 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). DarkSky is the first and currently the largest organization in the dark-sky movement. Principal approach DarkSky's principal approach is to raise awareness about the value of dark, star-filled night skies and enco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Chicago
The University of Chicago (UChicago, Chicago, or UChi) is a Private university, private research university in Chicago, Illinois, United States. Its main campus is in the Hyde Park, Chicago, Hyde Park neighborhood on Chicago's South Side, Chicago, South Side, near the shore of Lake Michigan about from Chicago Loop, the Loop. The university is composed of an College of the University of Chicago, undergraduate college and four graduate divisions: Biological Science, Arts & Humanities, Physical Science, and Social Science, which include various organized departments and institutes. In addition, the university operates eight professional schools in the fields of University of Chicago Booth School of Business, business, Crown Family School of Social Work, Policy, and Practice, social work, University of Chicago Divinity School, divinity, Graham School of Continuing Liberal and Professional Studies, continuing studies, Harris School of Public Policy, public policy, University of Chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor
A nuclear reactor is a device used to initiate and control a Nuclear fission, fission nuclear chain reaction. They are used for Nuclear power, commercial electricity, nuclear marine propulsion, marine propulsion, Weapons-grade plutonium, weapons production and Research reactor, research. Fissile material, Fissile nuclei (primarily uranium-235 or plutonium-239) absorb single neutron, neutrons and split, releasing energy and multiple neutrons, which can induce further fission. Reactors stabilize this, regulating Neutron absorber, neutron absorbers and neutron moderator, moderators in the core. Fuel efficiency is exceptionally high; Enriched uranium#Low-enriched uranium (LEU), low-enriched uranium is 120,000 times more energy dense than coal. Heat from nuclear fission is passed to a working fluid Nuclear reactor#By coolant, coolant. In commercial reactors, this drives Turbine, turbines and electrical generator shafts. Some reactors are used for district heating, and isotopes, isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Pile-1
Chicago Pile-1 (CP-1) was the 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 Allies of World War II, Allied effort to create nuclear weapons 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". After a series of attempts, the successful reactor was assembled in November 1942 by a team of about 30 that, in addi ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canoe
A canoe is a lightweight, narrow watercraft, 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 paddles. In British English, the term ''canoe'' can also refer to a kayak, whereas canoes are then called Canadian (canoe), Canadian or open canoes to distinguish them from kayaks. However, for official competition purposes, the American distinction between a kayak and a canoe is almost always adopted. At the Olympics, both conventions are used: under the umbrella terms Canoe Slalom and Canoe Sprint, there are separate events for canoes and kayaks. Culture Canoes were developed in 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 play ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saganashkee Slough
Saganashkee Slough is a , manmade riparian lake that forms part of the valley of the Cal-Sag Channel. It is located in the Palos Forest Preserves 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 carnivorous fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kayak
] A kayak is a small, narrow human-powered watercraft typically propelled by means of a long, double-bladed paddle. The word ''kayak'' originates from the Inuktitut word '' qajaq'' (). In British English, the kayak is also considered to be a kind of canoe. There are countless different types of kayaks due to the craft being easily adaptable for different environments and purposes. The traditional kayak has an enclosed deck and one or more cockpits, each seating one occupant or kayaker, differentiating the craft from an open-deck canoe. The cockpit is sometimes covered by a spray deck that prevents unwanted entry of water from waves or splashes. Even within these confines, kayaks vary vastly in respect to materials, length, and width, with some kayaks such as the sprint kayak designed to be fast and light, and others such as the whitewater kayak designed to be sturdy and maneuverable. Some modern paddlecrafts, which still claim the title "kayak", remove integral parts of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willow Springs, Illinois
Willow Springs is a village in Cook County, Illinois, United States, with a small portion extending into DuPage County. The village was founded in 1892 and was named for the springs along the Des Plaines River. In 2020, 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, adjacent to the Palos Forest Preserves. According to the 2021 census gazetteer files, Willow Springs has a total area of , of which (or 97.55%) is land and (or 2.45%) is water. Neighboring communities are Hickory Hills, Justice, Hodgkins, and Burr Ridge. Demographics As of the 2020 census there were 5,857 people, 2,303 households, and 1,494 families residing in the village. The population density was . There were 2,545 housing units at an average density of . The racial makeup of the village was 81.85% White, 1.33% African American, 0.38% Native American, 3.45% Asian, 0.02% Pacific Islander, 3.93% from other race ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hickory Hills, Illinois
Hickory Hills is a city in Cook County, Illinois, United States. 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 Pa ... [...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 18.8% 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, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
