104 (also known as Barge 104, or No.104) was an American whaleback barge in service between 1890 and 1898. The fourth whaleback constructed, she was built between October 1889 and February 1890, in Duluth, Minnesota by Alexander McDougall's American Steel Barge Company, for McDougall's fleet of the same name, based in Buffalo, New York. She was a whaleback, a class of distinctive, experimental ship designed and built by McDougall. The whalebacks were designed to be more stable in high seas. They had rounded decks, and lacked the normal straight sides seen on traditional lake freighters. 104 entered service on April 21, hauling iron ore from Two Harbors, Minnesota.

On November 10, 1898, while being towed out of Cleveland harbour with a cargo of coal bound for Duluth, she broke away from the tug Alva B. 104 crashed into Cleveland's west breakwater. She sank quickly, with her crew being rescued by the Cleveland United States Life-Saving Service. 104 was a total loss, becoming the first whaleback to be lost on the Great Lakes. (Full article...)

New York State Route 17A (NY 17A) is a state highway in southern New York in the United States, entirely within Orange County. Its western terminus is located in the village of Goshen at a junction with NY 17 (Future I-86), and its eastern terminus is at another intersection with NY 17 located in Southfields. It runs concurrently with NY 94 from Warwick to Florida. It serves mainly to connect Warwick with the rest of the county. While it is an east–west route, many sections run in a more north–south orientation. Its circuitous route allows it to offer much scenery to drivers.

The Greenwood Lake–Goshen portion of NY 17A was originally designated as part of New York State Route 55 in the 1920s. South of Greenwood Lake, NY 55 used modern NY 210. NY 55 was split into NY 17A and NY 210 as part of the 1930 renumbering of state highways in New York. Initially, only NY 210 continued east from Greenwood Lake to Southfields; however, NY 17A was extended to Southfields by 1933, overlapping NY 210. The overlap was eliminated in 1982 when NY 210 was truncated to Greenwood Lake. (Full article...)

The Axholme Joint Railway was a committee created as a joint enterprise between the Lancashire and Yorkshire Railway (L&Y) and the North Eastern Railway (NER) and was established by the North Eastern Railway Act 1902 (2 Edw. 7. c. clxviii) of 31 July 1902. It took over the Goole and Marshland Railway, running from Marshland Junction near Goole to Reedness Junction and Fockerby, and the Isle of Axholme Light Railway, running from Reedness Junction to Haxey Junction. Construction of the Goole and Marshland Railway had begun in 1898, and by the time of the takeover in early 1903, was virtually complete. The Isle of Axholme Light Railway was started in 1899, but only the section from Reedness Junction to Crowle was complete at the takeover. The northern section opened on 10 August 1903, and the line from Crowle to Haxey Junction opened for passengers on 2 January 1905.

A branch to Hatfield Moor was opened in 1909, but traffic from the peat works at Hatfield did not start to use the railway until 1913, when the company extended their line into the works. Traffic was mainly agricultural produce, together with peat from Hatfield Moor and from Swinefleet Peat Works which processed peat from Thorne Moors. Passenger services ceased in 1933, although occasional excursion trains continued to be run. The Haxey Junction to Epworth section closed in 1956, the Hatfield Moor Branch closed in 1964, and the remainder closed in 1965. However, most of the tracks were retained and operated as a long siding, to allow it to be used to carry heavy parts from Keadby Power Station across the Stainforth and Keadby Canal, as the bridge on the A161 road could not support the weight. The road bridge was replaced in 1970, and the rails were finally removed in 1972. (Full article...)

Community Notes (formerly known as Birdwatch) is a feature on X (formerly Twitter) where contributors can add context such as fact-checks under a post, image or video. It is a community-driven content moderation program, intended to provide helpful and informative context, based on a crowd-sourced system. Notes are applied to potentially misleading content by a bridging-based algorithm not based on majority rule, but instead agreement from users on different sides of the political spectrum.

The program launched on the platform in 2021 and became widespread in 2023. Initially shown to U.S. users only, notes were popularized in March 2022 over misinformation in the Russian invasion of Ukraine followed by COVID-19 misinformation in October. Birdwatch was then rebranded to Community Notes and expanded in November 2022. As of November 2023, it had approximately 133,000 contributors; notes reportedly receive tens of millions of views per day, with its goal being to counter propaganda and misinformation. According to investigation and studies, the vast majority of users do not see notes correcting content. In May 2024, a study of COVID-19 vaccine notes were deemed accurate 97% of the time. (Full article...)

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Oneworld (CRS: *O, stylised as oneworld) is a global airline alliance consisting of 15 member airlines. It was founded on 1 February 1999. The alliance's stated objective is to be the first-choice airline alliance for the world's frequent international travellers. Its headquarters have been located in Fort Worth, Texas, since December 2022.

The alliance's current membership consists of Alaska Airlines, American Airlines, British Airways, Cathay Pacific, Fiji Airways, Finnair, Iberia, Japan Airlines, Malaysia Airlines, Oman Air, Qantas, Qatar Airways, Royal Air Maroc, Royal Jordanian and SriLankan Airlines. (Full article...)

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Oroville Dam is an earthfill embankment dam on the Feather River east of the city of Oroville, California, in the Sierra Nevada foothills east of the Sacramento Valley. At 770 feet (235 m) high, it is the tallest dam in the U.S. and serves mainly for water supply, hydroelectricity generation, and flood control. The dam impounds Lake Oroville, the second-largest reservoir in California, capable of storing more than 3.5 million acre-feet (1.1×10^¹² US gal; 4.3×10⁹ m³).

Built by the California Department of Water Resources, Oroville Dam is one of the key features of the California State Water Project (SWP), one of two major projects passed that set up California's statewide water system. Construction was initiated in 1961, and despite numerous difficulties encountered during its construction, including multiple floods and a major train wreck on the rail line used to transport materials to the dam site, the embankment was topped out in 1967 and the entire project was ready for use in 1968. The dam began to generate electricity shortly afterwards with completion of the Edward Hyatt Power Plant, then the country's largest underground power station. (Full article...)

m-derived filters or m-type filters are a type of electronic filter designed using the image method. They were invented by Otto Zobel in the early 1920s. This filter type was originally intended for use with telephone multiplexing and was an improvement on the existing constant k type filter. The main problem being addressed was the need to achieve a better match of the filter into the terminating impedances. In general, all filters designed by the image method fail to give an exact match, but the m-type filter is a big improvement with suitable choice of the parameter m. The m-type filter section has a further advantage in that there is a rapid transition from the cut-off frequency of the passband to a pole of attenuation just inside the stopband. Despite these advantages, there is a drawback with m-type filters; at frequencies past the pole of attenuation, the response starts to rise again, and m-types have poor stopband rejection. For this reason, filters designed using m-type sections are often designed as composite filters with a mixture of k-type and m-type sections and different values of m at different points to get the optimum performance from both types. (Full article...)

The Geneva drive is a gear mechanism that translates a continuous rotation into an intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the driven wheel advancing it by one step. The drive wheel also has a raised circular blocking disc that locks the driven wheel in position between steps. Such a mechanism is used in film projectors, watches, and indexing tables, among others.

The rotor of a modern steam turbine , which converts steam (heat) energy into kinetic (mechanical) energy. The steam path is from the smallest blade, expanding through progressively larger blade elements. Steam turbines are used in power plants to extract mechanical work from pressurized steam and benefit from their high efficiency and high power-to-weight ratio compared to other technologies, leading to their widespread deployment from electricity generation to marine propulsion.

An escalator is a moving staircase for carrying people between floors of a building. The device consists of a motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal.

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The Commodore 64 is an 8-bit home computer introduced in 1982 by Commodore International. Its low retail price and easy availability led to the system becoming the market leader for three years. It remains the best-selling single personal computer model of all time.

The four-stroke cycle of an internal combustion engine is the cycle most commonly used for automotive and industrial purposes today, including cars, trucks, and generators.

The cycle was invented by Nikolaus Otto in 1876, and is also called the Otto cycle. The cycle is characterized by four strokes, or straight movements in a single direction, of the piston.

The OLPC XO-1 is an inexpensive subnotebook laptop computer intended to be distributed to children in developing countries.

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The ULPower UL260i, a flat-four engine produced by ULPower Aero Engines of Belgium. Flat-four engines are flat engines with four cylinders arranged horizontally in two banks of two cylinders on each side of a central crankcase; they can be used in cars, motorcycles, or aircraft. This type of engine tends to be well-balanced and have efficient cooling, but is expensive to manufacture and considerably wider than other engines.

MS Majesty of the Seas is a Sovereign class cruise ship owned and operated by Royal Caribbean International, a cruise line based in Miami, Florida. Her sister ship MS Sovereign of the Seas was the largest cruise ship in the world at the time of its completion in 1988.

Wind turbines belonging to the Thorntonbank Wind Farm located in the North Sea, 28 km (17 mi) off the coast of Belgium. Electricity generation started in early 2009, with an initial capacity of 30 MW, and that number is expected to rise to 300 MW by 2015. A 37 km (23 mi) 150 kV undersea cable connects the wind farm to the shore.

A structural worker bolts beams on the framework during the construction of the Empire State Building in New York City. The 1,250-foot (380 m) building opened on May 1, 1931, at the time the tallest building in the world, overtaking the Chrysler Building (seen to the right), which had just been completed the year before. The addition of a pinnacle and antennas later increased its overall height to 1,472 feet (449 m).

A filling station in Sabah, Malaysia, operated by Royal Dutch Shell. Filling stations, also known under a wide variety of names, are facilities that sell fuel and engine lubricants for motor vehicles. They include one or more fuel dispensers, which distribute fuels such as gasoline and diesel into the tanks within vehicles and calculate the financial cost of the fuel transferred. Filling stations may also include air compressors and electricity sockets, which may inflate tyres or offer charging stations. Many filling stations also incorporate a convenience store, where customers can purchase snacks and other goods.

The Nice tramway crossing Place Garibaldi, Nice, where it lowers its pantograph and is powered by batteries. This 8.7-kilometre (5.4 mi), single-line tramway is operated by Veolia Transdev. It opened on 24 November 2007, replacing bus lines 1, 2, 5 and 18.

A telephone, or phone, is a telecommunications device that converts sound, typically the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances through satellite.

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The Wiesen Viaduct is a single-track railway viaduct (concrete blocks with dimension stone coverage) which spans the Landwasser southwest of the hamlet of Wiesen, Switzerland. Designed by Henning Friedrich, then the chief engineer of the Rhaetian Railway, it was built between 1906 and 1909 by the contractor G. Marasi (Westermann & Cie, Zürich) under the supervision of P. Salaz and Hans Studer (RhB). The Rhaetian Railway still owns and uses the viaduct today for regular service with 29 passenger trains per day. An important element of the Davos–Filisur railway, the viaduct is 88.9 metres (292 ft) high, 210 metres (690 ft) long, and has a main span of 55 metres (180 ft). In 1926, the viaduct was the inspiration for Ernst Ludwig Kirchner's painting Brücke bei Wiesen.

A wheel is a circular component that is intended to rotate on an axial bearing. The wheel is one of the main components of the wheel and axle which is one of the six simple machines.

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Ruby Loftus Screwing a Breech Ring is a 1943 painting by the British painter Laura Knight depicting a young woman, Ruby Loftus (1921–2004), working at an industrial lathe as part of the British war effort in World War II. The painting was commissioned by the War Artists' Advisory Committee, and is now part of the Imperial War Museum's art collection. The painting brought instant fame to Loftus, and has been likened to the American figure of "Rosie the Riveter".

An interior view of Stockwell Garage, a large bus garage in Stockwell, London, designed by Adie, Button and Partners and opened in 1952. The 393-foot-long (120 m) roof structure, seen here, is supported by ten very shallow "two-hinged" arched ribs, between which are cantilevered barrel vaults topped by large skylights. The garage, which could originally hold 200 buses, has been a Grade II* Listed Building since 1988.

An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors suspended by towers or utility poles.

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The Mazda RX-8 sports car is a front mid-engine, rear-wheel drive four-seat coupé manufactured by Mazda Motor Corporation. It is the successor to the RX-7 and, like its predecessors in the RX range, it is powered by a rotary engine. The RX-8 began North American sales in the 2004 model year.

A diagram of a typical turbojet engine. Air is compressed as it enters the engine, and is mixed with fuel that burns in the combustion section. Released through the exhaust, the resulting hot gases provide forward thrust and turn the turbines that drive the fan blades of the compressor.

ChatGPT is a generative artificial intelligence chatbot developed by OpenAI. It was released in November 2022. It uses large language models—specifically generative pre-trained transformers (GPTs)—to generate text, speech, and images in response to user prompts. It is credited with accelerating the AI boom, an ongoing period marked by rapid investment and public attention toward the field of artificial intelligence (AI). OpenAI operates the service on a freemium model. Users can interact with ChatGPT through text, audio, and image prompts. (Full article...)

YouTube is an American online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Chad Hurley, Jawed Karim, and Steve Chen, who were former employees of PayPal. Headquartered in San Bruno, California, it is the second-most-visited website in the world, after Google itself. In January 2024, YouTube had reached more than 2.7billion monthly active users, who collectively consumed more than one billion hours of video content every day. As of May 2019^[update], videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and as of mid-2024^[update], there were approximately 14.8billion videos in total. (Full article...)

Anthropic PBC is an American artificial intelligence (AI) company headquartered in San Francisco. It has developed a range of large language models (LLMs) named Claude. (Full article...)

Google LLC (/ˈɡuː.ɡəl/ ^ⓘ, GOO-gəl) is an American multinational technology corporation focused on information technology, online advertising, search engine technology, email, cloud computing, software, quantum computing, e-commerce, consumer electronics, and artificial intelligence (AI). It has been referred to as "the most powerful company in the world" by the BBC, and is one of the world's most valuable brands. Google's parent company Alphabet Inc. has been described as a Big Tech company. (Full article...)

Elon Reeve Musk (/ˈiːlɒn/ EE-lon; born June 28, 1971) is a businessman and entrepreneur known for his leadership of Tesla, SpaceX, X, and xAI. Musk has been the wealthiest person in the world since 2025; as of April 2026,^[update] Forbes estimates his net worth to be US$809 billion. (Full article...)

OpenClaw (formerly Clawdbot, Moltbot, and Molty) is a free and open-source autonomous artificial intelligence agent that can execute tasks via large language models (LLMs), using messaging platforms as its main user interface. (Full article...)

Facebook is an American social networking service owned by the American technology conglomerate Meta Platforms. It was founded in 2004 by Mark Zuckerberg, along with his Harvard College roommates and fellow students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. The name Facebook derives from the face book directories often given to American university students. (Full article...)

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A QR code, short for quick-response code, is a type of two-dimensional matrix barcode invented in 1994 by Masahiro Hara of the Japanese company Denso Wave for labelling automobile parts. It features white and black squares within a square grid featuring fiducial markers on the corners, readable by imaging devices like cameras, and processed using Reed–Solomon error correction until the image can be appropriately interpreted. The required data is then extracted from patterns that are present in both the horizontal and the vertical components of the QR image. (Full article...)

Moltbook is an internet forum for artificial intelligence agents, launched on January 28, 2026, by entrepreneur Matt Schlicht. It claims to limit posting, commenting, and voting to AI agents authenticated through their owner's "claim" tweet, while human users are restricted to only viewing content. Initially, the platform lacked a mechanism to verify whether a poster is actually an AI agent or a human; the prompts given to agents contain cURL commands that humans can replicate. However, in February 2026, a reverse CAPTCHA system was introduced to filter out human users. (Full article...)

Artificial intelligence (AI) is the capability of computational systems to perform tasks typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. It is a field of research in engineering, mathematics and computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. (Full article...)