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The sound barrier is the increase in drag and other problems experienced by an object when it approaches the speed of sound. In dry air at 20 °C, the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s).
Learn about the history, style, and conventions of the daily American-style crossword puzzle published in The New York Times since 1942. Find out who edits the puzzle, how to access it online, and what themes and clues to expect.
A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to ...
A noise barrier is an exterior structure to reduce noise pollution from roadways, railways, or industries. Learn about the history, design, materials, and advantages and disadvantages of noise barriers from this Wikipedia article.
Learn how D-Day codewords appeared as crossword solutions in The Daily Telegraph in 1944, causing a security alarm. Find out the background, investigation and aftermath of this coincidence or conspiracy.
David Steinberg is a crossword constructor and editor who works for Andrews McMeel Universal. He is the youngest known crossword editor ever for a major newspaper and has published nearly 500 puzzles in various outlets.
Learn about the origin, development and popularity of cryptic crosswords, a word puzzle genre that uses clues with wordplay and anagrams. Find out how cryptic crosswords differ in the UK and the US, and what types of clues and techniques are used by setters and constructors.
Solve clues and fill the grid with words and phrases in Crossword, one of the many games on AOL.com. You can also chat with other players and enjoy trending content while you play.