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  2. “Can You Name These Cities?”: 21 Questions To Challenge ...

    www.aol.com/lifestyle/name-cities-21-questions...

    Let’s put your knowledge to the test with our City Silhouette Quiz! Skyline silhouette of a city at night with illuminated buildings and a bridge in the background. Image credits: Kehn Hermano

  3. List of largest cities - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_cities

    The Chinese municipality of Chongqing, which is the largest city proper in the world by population, comprises a huge administrative area of 82,403 km 2, around the size of Austria. However, more than 70% of its 30-million population are agricultural workers living in a rural setting .

  4. Twenty-One (game show) - Wikipedia

    en.wikipedia.org/wiki/Twenty-One_(game_show)

    Twenty-One is an American game show originally hosted by Jack Barry that initially aired on NBC from 1956 to 1958. Produced by Jack Barry-Dan Enright Productions, the show featured two contestants playing against each other in separate isolation booths, answering general-knowledge questions to earn 21 total points.

  5. Noise barrier - Wikipedia

    en.wikipedia.org/wiki/Noise_barrier

    The sound tube in Melbourne, Australia, designed to reduce roadway noise without detracting from the area's aesthetics. A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution.

  6. The 21 most influential cities in the world - AOL

    www.aol.com/2019-09-04-the-21-most-influential...

    Not all major cities are created equal, with some places around the world holding more influence over global business, culture, and politics than others. The 21 most influential cities in the ...

  7. 11 photos of America's fighter jets breaking the sound barrier

    www.aol.com/article/2016/03/07/11-photos-fighter...

    At a speed of about 767 miles per hour, depending on temperature and humidity, a moving object will break the sound barrier. It was not until World War II, when aircraft started to reach the ...

  8. Sound barrier - Wikipedia

    en.wikipedia.org/wiki/Sound_barrier

    Although Concorde and the Tu-144 were the first aircraft to carry commercial passengers at supersonic speeds, they were not the first or only commercial airliners to break the sound barrier. On 21 August 1961, a Douglas DC-8 broke the sound barrier at Mach 1.012, or 1,240 km/h (776.2 mph), while in a controlled dive through 41,088 feet (12,510 ...

  9. List of televised academic student quiz programs - Wikipedia

    en.wikipedia.org/wiki/List_of_televised_academic...

    High School Quiz Bowl [35] Cox Channel 4: Baton Rouge, Louisiana: Annual High School Quiz Show [36] WGBH: Massachusetts: 2009: Hispanic College Quiz [37] Syndication: Chicago, Illinois (origin) United States: 2008: October Histrionics [38] TVS: Sydney: 2009: Hometown High-Q [39] KDKA: Pittsburgh, Pennsylvania: 2000: In the Know [40] WBNS (1970s ...

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