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Pizza is a round, flatbread traditionally topped with tomato sauce and cheese. Dough is made from wheat flour, water, yeast, and salt. First recorded pizzaiolo was Antonio Testa from Naples, Italy. Pizza was originally sold in markets and by street vendors. In the United States, pizza first became popular in large cities such as New York and Chicago. Today, pizza is one of the most popular foods in the world.
Popular science writing typically seeks to explain complex concepts to a lay audience in an accessible and enjoyable way. The genre has its roots in the 18th century, when scientists such as Isaac Newton and Charles Darwin began publishing works for a non-specialist audience. The popularity of the genre increased dramatically in the second half of the 20th century, thanks in part to the growth of mass media .
The Wright brothers are credited as the inventors of the airplane, and the first successful powered flight took place in 1903. The first heavier-than-air aircraft was invented in 1883, while the first powered airplane was invented in 1906. The first jet engine was invented in 1937, and the first supersonic aircraft was flown in 1947.
The article covers six interesting facts about the history of various technology milestones. The first telegraph message was sent in 1844 by Samuel Morse, the first transatlantic telephone call was made in 1927 , the first computer was invented in 1936 by Konrad Zuse, the first email was sent in 1971 by Ray Tomlinson, the first website was created in 1991 by Tim Berners-Lee , and the first selfie was taken in 2002 by Philippe Kahn.
Nuclear energy has a long and complex history, dating back to the early 1900s. Two physicists, Enrico Fermi and Leo Szilard, were instrumental in its development , filing a patent for the process of creating a nuclear chain reaction. In 1942, the United States government initiated the Manhattan Project, a top secret program to develop nuclear weapons. The first nuclear weapon was successfully tested in 1945 and subsequently used in warfare against the Japanese city of Hiroshima.
The article discusses six interesting facts about U.S. presidents. Jefferson was the main author of the Declaration of Independence, Franklin helped draft the Constitution, Lincoln was the first to be assassinated, Kennedy was the first Catholic president, Nixon was the first to resign, and Carter was the first to be born in a hospital.
1. Black holes are fascinating objects in the universe that are little-understood. 2. These extremely dense objects are thought to be formed when massive stars collapse. 3. Black holes have a gravitational pull so strong that not even light can escape it. 4. Scientists believe there may be billions of black holes in the universe. 5. Some black holes are thought to power quasars, which are extremely bright objects. 6. Even though black holes cannot be seen directly, their effects can be observed on surrounding objects.
The article covers a few interesting facts about the internet, including the first microprocessor, personal computer, email, website, and online search engine.
