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๐Ÿ”— Crown shyness

๐Ÿ”— Agriculture ๐Ÿ”— Plants ๐Ÿ”— Forestry

Crown shyness (also canopy disengagement, canopy shyness, or intercrown spacing) is a phenomenon observed in some tree species, in which the crowns of fully stocked trees do not touch each other, forming a canopy with channel-like gaps. The phenomenon is most prevalent among trees of the same species, but also occurs between trees of different species. There exist many hypotheses as to why crown shyness is an adaptive behavior, and research suggests that it might inhibit spread of leaf-eating insect larvae.

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๐Ÿ”— โ€œBush hid the factsโ€ bug

๐Ÿ”— Computing ๐Ÿ”— Microsoft Windows ๐Ÿ”— Microsoft Windows/Computing ๐Ÿ”— Software ๐Ÿ”— Software/Computing

Bush hid the facts is a common name for a bug present in some versions of Microsoft Windows, which causes text encoded in ASCII to be interpreted as if it were UTF-16LE, resulting in garbled text. When the string "Bush hid the facts", without newline or quotes, was put in a new Notepad document and saved, closed, and reopened, the nonsensical sequence of Chinese characters "็•‚ๆกณๆ  ๆ‘ฉ็ ๆ•จๆ˜ ๆก็ด" would appear instead.

While "Bush hid the facts" is the sentence most commonly presented on the Internet to induce the error, the bug can be triggered by many strings with letters and spaces in the same positions, for example "hhhh hhh hhh hhhhh". Other sequences trigger the bug as well, including even the text "a ".

The bug occurs when the string is passed to the Win32 charset detection function IsTextUnicode. IsTextUnicode sees that the bytes match the UTF-16LE encoding of valid (if nonsensical) Chinese Unicode characters, concludes that the text is valid UTF-16LE Chinese and returns true, and the application then incorrectly interprets the text as UTF-16LE.

The bug had existed since IsTextUnicode was introduced with Windows NT 3.5 in 1994, but was not discovered until early 2004. Many text editors and tools exhibit this behavior on Windows because they use IsTextUnicode to determine the encoding of text files. As of Windows Vista, Notepad has been modified to use a different detection algorithm that does not exhibit the bug, but IsTextUnicode remains unchanged in the operating system, so any other tools that use the function are still affected.

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๐Ÿ”— Solarpunk

๐Ÿ”— Climate change ๐Ÿ”— Environment ๐Ÿ”— Science Fiction ๐Ÿ”— Literature ๐Ÿ”— Politics ๐Ÿ”— Visual arts ๐Ÿ”— Ecology ๐Ÿ”— Punk music

Solarpunk is a movement that encourages optimistic envisionings of the future in light of present environmental concerns, such as climate change and pollution, as well as social inequality. Solarpunk encompasses a multitude of media such as literature, art, architecture, fashion, music, and games. Solarpunk focuses on renewable energies, as well as technology as a whole, to envision a positive future for humanity; although, it also embraces less advanced ways to reduce carbon emissions, like gardening. Solarpunk is also a genre of speculative fiction; some of the most well-known examples are Solarpunk: Ecological and Fantastical Stories in a Sustainable World and Sunvault: Stories of Solarpunk and Eco-Speculation.

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๐Ÿ”— General Motors Streetcar Conspiracy

๐Ÿ”— California ๐Ÿ”— Business ๐Ÿ”— Politics ๐Ÿ”— Trains ๐Ÿ”— Politics/American politics ๐Ÿ”— Trains/Rapid transit ๐Ÿ”— Buses ๐Ÿ”— Trains/Streetcars

The notion of a General Motors streetcar conspiracy emerged after General Motors (GM) and other companies were convicted of monopolizing the sale of buses and supplies to National City Lines (NCL) and its subsidiaries. In the same case, the defendants were accused of conspiring to own or control transit systems, in violation of Section 1 of the Sherman Antitrust act. The suit created lingering suspicions that the defendants had in fact plotted to dismantle streetcar systems in many cities in the United States as an attempt to monopolize surface transportation.

Between 1938 and 1950, National City Lines and its subsidiaries, American City Lines and Pacific City Linesโ€”with investment from GM, Firestone Tire, Standard Oil of California (through a subsidiary), Federal Engineering, Phillips Petroleum, and Mack Trucksโ€”gained control of additional transit systems in about 25 cities. Systems included St. Louis, Baltimore, Los Angeles, and Oakland. NCL often converted streetcars to bus operations in that period, although electric traction was preserved or expanded in some locations. Other systems, such as San Diego's, were converted by outgrowths of the City Lines. Most of the companies involved were convicted in 1949 of conspiracy to monopolize interstate commerce in the sale of buses, fuel, and supplies to NCL subsidiaries, but were acquitted of conspiring to monopolize the transit industry.

The story as an urban legend has been written about by Martha Bianco, Scott Bottles, Sy Adler, Jonathan Richmond, and Robert Post. It has been explored several times in print, film, and other media, notably in Who Framed Roger Rabbit, Taken for a Ride, Internal Combustion, and The End of Suburbia.

Only a handful of U.S. cities, including San Francisco, New Orleans, Newark, Cleveland, Philadelphia, Pittsburgh, and Boston, have surviving legacy rail urban transport systems based on streetcars, although their systems are significantly smaller than they once were. Other cities are re-introducing streetcars. In some cases, the streetcars do not actually ride on the street. Boston had all of its downtown lines elevated or buried by the mid-1920s, and most of the surviving lines at grade operate on their own right of way. However, San Francisco's and Philadelphia's lines do have large portions of the route that ride on the street as well as using tunnels.

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๐Ÿ”— Sweden Solar System

๐Ÿ”— Astronomy ๐Ÿ”— Sweden ๐Ÿ”— Solar System ๐Ÿ”— Astronomy/Solar System

The Sweden Solar System is the world's largest permanent scale model of the Solar System. The Sun is represented by the Ericsson Globe in Stockholm, the largest hemispherical building in the world. The inner planets can also be found in Stockholm but the outer planets are situated northward in other cities along the Baltic Sea. The system was started by Nils Brenning and Gรถsta Gahm and is on the scale of 1:20 million.

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๐Ÿ”— List of Emerging Technologies

๐Ÿ”— Technology ๐Ÿ”— Lists ๐Ÿ”— Futures studies ๐Ÿ”— Invention

Emerging technologies are those technical innovations that represent progressive innovations within a field for competitive advantage.

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๐Ÿ”— Illegal number

๐Ÿ”— Numbers ๐Ÿ”— Law

An illegal number is a number that represents information which is illegal to possess, utter, propagate, or otherwise transmit in some legal jurisdiction. Any piece of digital information is representable as a number; consequently, if communicating a specific set of information is illegal in some way, then the number may be illegal as well.

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๐Ÿ”— Telling the Bees

๐Ÿ”— Agriculture ๐Ÿ”— England ๐Ÿ”— Folklore

Telling the bees is a traditional custom of many European countries in which bees would be told of important events in their keeper's lives, such as births, marriages, or departures and returns in the household. If the custom was omitted or forgotten and the bees were not "put into mourning" then it was believed a penalty would be paid, such as the bees leaving their hive, stopping the production of honey, or dying. The custom is best known in England, but has also been recorded in Ireland, Wales, Germany, Netherlands, France, Switzerland, Bohemia, and the United States.

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๐Ÿ”— Hy

๐Ÿ”— Computing ๐Ÿ”— Computer science ๐Ÿ”— Computing/Software

Hy (alternately, Hylang) is a programming language, a dialect of the language Lisp designed to interact with the language Python by translating expressions into Python's abstract syntax tree (AST). Hy was introduced at Python Conference (PyCon) 2013 by Paul Tagliamonte.

Similar to Kawa's and Clojure's mapping of s-expressions onto the Java virtual machine (JVM), Hy is meant to operate as a transparent Lisp front end to Python's abstract syntax. Lisp allows operating on code as data (metaprogramming). Thus, Hy can be used to write domain-specific languages. Hy also allows Python libraries, including the standard library, to be imported and accessed alongside Hy code with a compiling step converting the data structure of both into Python's AST.

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  • "Hy" | 2019-08-04 | 850 Upvotes 141 Comments
  • "Hy" | 2016-11-07 | 70 Upvotes 5 Comments

๐Ÿ”— Gรถbekli Tepe

๐Ÿ”— Ancient Near East ๐Ÿ”— Turkey ๐Ÿ”— Archaeology

Gรถbekli Tepe (Turkish:ย [ษŸล“becหˆli teหˆpe], "Potbelly Hill") is an archaeological site in the Southeastern Anatolia Region of Turkey approximately 12ย km (7ย mi) northeast of the city of ลžanlฤฑurfa. The tell (artificial mound) has a height of 15ย m (49ย ft) and is about 300ย m (980ย ft) in diameter. It is approximately 760ย m (2,490ย ft) above sea level.

The tell includes two phases of use, believed to be of a social or ritual nature by site discoverer and excavator Klaus Schmidt, dating back to the 10thโ€“8th millennium BCE. During the first phase, belonging to the Pre-Pottery Neolithic A (PPNA), circles of massive "T-shaped" stone pillars were erected โ€“ the world's oldest known megaliths.

More than 200 pillars in about 20 circles are currently known through geophysical surveys. Each pillar has a height of up to 6ย m (20ย ft) and weighs up to 10 tons. They are fitted into sockets that were hewn out of the bedrock. In the second phase, belonging to the Pre-Pottery Neolithic B (PPNB), the erected pillars are smaller and stood in rectangular rooms with floors of polished lime. The site was abandoned after the Pre-Pottery Neolithic B (PPNB). Younger structures date to classical times.

The details of the structure's function remain a mystery. The excavations have been ongoing since 1996 by the German Archaeological Institute, but large parts still remain unexcavated. In 2018, the site was designated a UNESCO World Heritage Site.

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