Chicago is themost populous city in the U.S. state ofIllinois and in theMidwestern United States . Located on the western shore ofLake Michigan , it is thethird-most populous city in the United States , with a population of 2.74 million at the2020 census . TheChicago metropolitan area has 9.41 million residents and is thethird-largest metropolitan area in the country. Chicago is theseat ofCook County , thesecond-most populous county in the U.S.
Chicago is an international hub for finance,culture , commerce, industry, education, technology, telecommunications, andtransportation . It has the largest and most diverse financederivatives market in the world, generating 20% of all volume incommodities andfinancial futures alone.O'Hare International Airport is routinely ranked among theworld's top ten busiest airports by passenger traffic , and the region is also the nation's railroad hub. The Chicago area has one of the highestgross domestic products (GDP) of any urban region in the world, generating $689 billion in 2018.Chicago's economy isdiverse , with no single industry employing more than 14% of the workforce. (Full article... )
The
Manhattan Project was the effort, led by the
United States with participation from the
United Kingdom and
Canada , which led to the development of the first
atomic bomb during
World War II . From 1942 to 1946 the project was under the command of
Major General Leslie R. Groves Jr. of the
US Army Corps of Engineers . The project had its roots in the
Einstein–Szilárd letter , which warned that
Nazi Germany might develop nuclear weapons . The letter was written by prominent physicists, signed by
Albert Einstein , and delivered to
President Franklin D. Roosevelt in October 1939. The Manhattan Project, which began as a small research program that year, eventually employed more than 130,000 people at a cost of nearly
US$ 2
billion . Research and production took place at more than 30 sites, some secret, including universities across the United States, Canada, and the United Kingdom. The three primary research and production sites of the project were the
plutonium -production facility at the
Hanford Site in eastern
Washington state , the
uranium enrichment facilities at
Oak Ridge, Tennessee , and the weapons research and design laboratory at
Los Alamos, New Mexico .
Little Boy , the bomb that was eventually
dropped at Hiroshima , was a
gun-type fission weapon made from
uranium-235 , an
isotope of uranium that makes up only 0.7% of natural uranium that was produced at Oak Ridge.
Fat Man , the more complex plutonium-core bomb dropped at
Nagasaki , was an
implosion-type nuclear weapon that required a concerted design and construction effort from Los Alamos. A plutonium bomb was the first nuclear device ever detonated, at the
Trinity test in July 1945.
The following are images from various Chicago-related articles on Wikipedia.
Image 6 WGN began in the early days of radio and developed into a multi-platform broadcaster, including a cable television super-station. (from
Chicago )
Image 14 Ethnic origins in Chicago (from
Chicago )
Image 18 Downtown and the North Side with beaches lining the waterfront (from
Chicago )
Image 29 Chicago tenants picket against rent increases (March 1920) (from
Chicago )
Image 30 The main hall of the Field Museum of Natural History in 2007, with
Sue the T. rex in the foreground (from
Culture of Chicago )
Image 39 Map of racial distribution in Chicago, 2010 U.S. census. Each dot is 25 people:
⬤ White⬤ Black⬤ Asian⬤ Hispanic⬤ Other (from
Chicago )
Image 48 A satellite image of Chicago (from
Chicago )
List of Chicago Bears head coaches This is acomplete list of Chicago Bears head coaches . The head coaches list for theChicago Bears , includes coaches for the Decatur Staleys (1919–1920) and Chicago Staleys (1921), of theNational Football League (NFL). The Bears franchise was founded as theDecatur Staleys, a charter member of the American Professional Football Association. The team moved toChicago in 1921, and changed their name to the Bears in 1922, the same year the American Professional Football Association (APFA) changed its name to the National Football League.
The Chicago Bears have played over one thousand games. In those games, five different coaches have wonNFL championships with the team:George Halas in1921 ,1933 ,1940 ,1941 ,1946 , and1963 ,Ralph Jones in1932 ,Hunk Anderson andLuke Johnsos in1943 , andMike Ditka in1985 . George Halas is the only coach to have more than one tenure and is the all-time leader in games coached and wins, while Ralph Jones leads all coaches in winning percentage with .706. Of the 16 Bears coaches, three have been elected into thePro Football Hall of Fame : George Halas,Paddy Driscoll , and Mike Ditka. Statistics correct as of December 30, 2007, after the end of the2007 NFL season . (Read more... )
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Good articles 28th International Eucharistic Congress 1967 Belvidere tornado 1998 National League Wild Card tie-breaker game 2000 Illinois's 1st congressional district election MLS Cup 2000 2002 Delphi Indy 300 MLS Cup 2003 Tornado outbreak of October 17–19, 2007 2008 American League Central tie-breaker game 2015 Chicago Bears season 2018 Chicago Marathon 2021 Naperville–Woodridge tornado Isaac Adewole Harold Agnew Joe Aiello Vic Aldridge Cliff Alexander All Day (Kanye West song) All the Way (Eddie Vedder song) Samuel King Allison Luis Walter Alvarez America Windows American Airlines Flight 191 Hannah Arendt Grainger Plaza Emilie Autumn Emil Bach House Myrtle Bachelder Charlie Baker Scott Baker (right-handed pitcher) Paul Bako Ernie Banks Fanya Baron Michael Barrett (baseball) Baseball's Sad Lexicon Batman Begins The Batman (film) Bayard–Condict Building Gene Bearden Benet Academy Sean Bennett (gridiron football) Doug Bentley Max Bentley Joseph Berrios The Blackstone Hotel Blackstone Library Timothy Blackstone Block 37 The Blues Brothers (film) Zach Bogosian Frenchy Bordagaray Jim Bottomley Bound for Glory IV Rene Bourque Jay Bouwmeester Milton Bradley (baseball) Tim Breslin Roger Bresnahan Frank Brimsek Marion L. 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