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This is a record of material that was recently featured on the Main Page as part of Did you know (DYK). Recently created new articles, greatly expanded former stub articles and recently promoted good articles are eligible; you can submit them for consideration.

Archives are generally grouped by month of Main Page appearance. (Currently, DYK hooks are archived according to the date and time that they were taken off the Main Page.) To find which archive contains the fact that appeared on Did you know, go to article's talk page and follow the archive link in the DYK talk page message box.

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Did you know...

7 May 2021

12:30, 7 May 2021 (UTC)

Adelaide Level lead mine at Arn Gill

... that the former Adelaide Level lead mine (pictured) at Arn Gill in Swaledale, England, was named after Lady Adelaide Lamont, a descendant of Judge Jeffreys?
... that pioneer film actress Ann Brody was known for her roles as Jewish mothers?
... that the 2000 Football League Third Division play-off Final was played at Wembley Stadium on a Friday night to accommodate a friendly between England and Brazil?
... that after Peggy Knobloch disappeared on the way home from school in 2001, her body was not located until 2016?
... that chemical warfare agents require specialized equipment for workplace exposure monitoring?
... that when Ruth Stokes defended her dissertation on the theory of linear programming in 1931, she became the first person to earn a doctorate in mathematics from Duke University?
... that the 11th-century Dalby Gospel Book is the first medieval manuscript known to have existed in Denmark?
... that art collector Michael Xufu Huang bought a portrait of Anna Sorokin, who had defrauded him years earlier, to be displayed in his museum?

00:30, 7 May 2021 (UTC)

Rosa von Milde

... that Rosa Agthe (pictured) and her future husband performed the roles of Elsa and Telramund, respectively, in the world premiere of Wagner's Lohengrin, conducted by Franz Liszt in Weimar?
... that the Hartford Courant described the library of the Hartford Medical Society as "one of the country's finest collections of medical literature"?
... that when Giovanni Rossi founded a utopian community in Brazil, based on anarchist ideals including free love, most of its 300 members were men?
... that one of the highest death rates in the Holocaust was in Bulgarian-occupied Greece, where 97 percent of Jews were killed in less than a month?
... that Emma Mullin, who won four Gaelic football championships, was also the first player from her association football club to play for the Republic of Ireland?
... that the Chamber of Progress describes itself as devoted to a "progressive society" but some critics have called it an astroturfing group and "progressive camouflage" for anti-union organizing?
... that Spanish actress Úrsula Corberó captured footage for the music video for "Un Dia (One Day)" without involving production assistants?
... that the russet brittlegill is collected and eaten by people in the Ivory Coast?

6 May 2021

12:00, 6 May 2021 (UTC)

Spherical concretion on Ward Beach

... that spherical concretions (example pictured) were revealed on Ward Beach as a result of the large uplift of the seabed caused by the 2016 Kaikōura earthquake?
... that Grischa Huber played Grischa in Under the Pavement Lies the Strand, regarded as "a cult film in the feminist movement"?
... that Charles Scribner's Sons occupied its Fifth Avenue building, designed by Ernest Flagg, for 19 years before moving to another Fifth Avenue building, also designed by Flagg?
... that Japanese singer Lovely Summer Chan attended the same middle school and high school as the members of the all-female band the Peggies?
... that Ishihara Park and Gandara Park in Santa Monica, California, are both named after local World War II veterans whose military contributions were overlooked during their lifetimes?
... that after their roughly 320 km/h (200 mph) crash at the 2021 Emilia Romagna Grand Prix, George Russell slapped Valtteri Bottas on his crash helmet while Bottas showed Russell his middle finger?
... that American actress Minerva Bussenius's stage name Roberta Arnold is a combination of her father's and uncle's names?
... that Adam West was on the set of Zombie Nightmare for two days?

00:00, 6 May 2021 (UTC)

Róża Maria Goździewska

... that eight-year-old Róża Maria Goździewska (pictured) was "the youngest child nurse" in the Warsaw Uprising?
... that choreographer George Balanchine completed the ballet Symphony in Three Movements in a week, despite its complex choreography, large cast and Stravinsky's intricate score of the same name?
... that Julie Erichsen is the first female Norwegian gymnast to qualify for an Olympic Games since 1992?
... that the 2021 book Do Not Disturb was credited with exposing "a remarkable catalog of lies the [Rwandan government] sold to western apologists"?
... that Ecuadorian presidential candidate Ximena Peña previously represented the United States and Canada in the National Assembly?
... that smell training is being used to treat long-term loss of smell after COVID-19 infection?
... that the yellow and orange mushroom Imperator luteocupreus stains blue when bruised or cut?
... that the founding owner of Minnesota radio station WVAL would climb the 300-foot (91 m) transmission tower himself and change the light bulbs on the mast?

5 May 2021

12:00, 5 May 2021 (UTC)

Interior courtyard of the Currency Building

... that Kolkata's Currency Building (pictured) has housed the Agra Bank, an office for the issue and exchange of currency, the Reserve Bank of India, and a public art museum?
... that Vieno Simonen was first elected to the Finnish parliament in 1948, ten years after she was widowed with seven children?
... that Langston Hughes allowed his poem "Mississippi–1955", written in response to Emmett Till's lynching, to be republished in all newspapers that wanted to?
... that Chris Horn, founder of the NASDAQ-listed IONA Technologies, was still living with his wife and four children in a three-bedroom semi-detached house at a time when his net worth exceeded 300 million dollars?
... that the Los Angeles restaurant El Cholo Spanish Cafe is credited with introducing the burrito to the U.S.?
... that the fossil torchwood genus Barghoornia was named in honor of paleobotanist Elso Barghoorn?
... that Frederic Growse finished the first complete and illustrated English translation of the Ramayana of Tulsidas in 1883?
... that the play Karl Marx in Kalbadevi depicts an imaginary visit by Marx to Kalbadevi, the hyper-capitalist area of Mumbai, India?

00:00, 5 May 2021 (UTC)

"The finest two acres of private garden" in Scotland

... that seeds from Asia allowed Dorothy Renton to create "the finest two acres of private garden" (detail pictured) in Scotland?
... that May 4 is celebrated both as Literary Day and as Youth Day in honor of the May Fourth Movement?
... that Conn Findlay is one of only two individuals to win sailing's America's Cup and an Olympic gold medal in rowing?
... that pentasomy X, in which a girl or woman has five X chromosomes, is sometimes mistaken for Down syndrome?
... that John Thomas Douglass's Virginia's Ball, which premiered in 1868, is generally regarded as the first opera written by a black composer?
... that in his book, Uğur Ümit Üngör argues that the Armenian Genocide contributed to The Making of Modern Turkey?
... that Orgill, Inc., now the world's largest independently owned distributor of hardlines, began as a hardware store in 1847, making it the oldest Memphis-founded company still in operation?
... that the colonial tunicate Botrylloides leachii can regenerate its whole body from a small fragment of tissue?

4 May 2021

12:00, 4 May 2021 (UTC)

Linn Sömskar

... that Linn Sömskar (pictured) has won medals at World Cups in both cross-country skiing and roller skiing?
... that Japan National Route 119 runs along the world's longest tree-lined avenue?
... that soprano Florence Kirk's temperamental fit over her costume as Lady Macbeth led to the professional debut of opera star Regina Resnik who replaced her?
... that actor Don Johnson and other investors reportedly planned to restart production of the Renaissance Tropica, an electric car which appeared in an episode of Nash Bridges?
... that Adeline Gray was the first person to jump using a nylon parachute?
... that Asus had to rename their ZenFone 6 for the Indian market after the Delhi High Court ruled that the name violated a competitor's trademark?
... that Finnish minister Kyllikki Pohjala learned English while working in New York hospitals to pay for her education at Columbia University?
... that American fiction's first son-of-a-bitch is in the writings of John Neal?

00:00, 4 May 2021 (UTC)

Model of the Flying Dutchman

... that the Flying Dutchman (model pictured), a locomotive powered by a horse on a treadmill, could carry 12 passengers at speeds of around 12 miles per hour (19 km/h)?
... that toy manufacturer siblings Nick, Anna, and Mat Mowbray bought Coatesville mansion near Auckland, New Zealand, for NZ$32.5 million when they were in their early thirties?
... that safe listening prevents risks to hearing from voluntary sound exposure rather than unwanted noise?
... that "Kiss Me More" interpolates the melody from "Physical" by Olivia Newton-John?
... that a report by Witold Pilecki, a Polish resistance fighter who infiltrated Auschwitz, was translated into English in 2012 as The Auschwitz Volunteer: Beyond Bravery?
... that Facebook has estimated that fake news reached 126 million voters on social media in the 2016 United States presidential election?
... that one of the Cehennemağzı Caves in northwestern Turkey features a very old Christian church, which was used as a secret place of worship in the first years of Christianity?
... that geographer John Fraser Hart does not use a computer, preferring to type emails on his typewriter and have an assistant re-type them digitally?

3 May 2021

12:00, 3 May 2021 (UTC)

Hercules ant

... that in North America, the Hercules ant (pictured) tends aphids, as well as the larvae of the silvery blue butterfly?
... that Four Arguments for the Elimination of Television is the first book that collects information from various sources to determine how the wide availability of television affects society?
... that after the BBC suspended its regular programming following the death of Prince Philip, Duke of Edinburgh, the broadcaster received criticism for its continuous coverage of the event?
... that Aaron Nola was the first Philadelphia Phillies pitcher since 1989 to make his major league debut the year after he was drafted?
... that the live-action television drama adaptation of Kakafukaka was the first show broadcast on MBS's programming block, Drama Tokku?
... that for his 2015 mural Mutual Entanglements, artist Sandeep Mukherjee instructed the gallery to install the 10 panels in whatever order and orientation they wanted?
... that the president of the Palestine Oriental Society was of the opinion that the monuments and antiquities of Palestine belonged to the Palestinians?
... that on Christmas Eve in 1917, Lieutenant Cedric Naylor and some of his crew remained aboard their sinking ship so they could fire upon the submarine that had torpedoed her?

00:00, 3 May 2021 (UTC)

72nd Street station original entrance

... that the original entrance to New York City's 72nd Street station (pictured) was once called "a miserable monstrosity as to architecture" and recommended for demolition?
... that the 2011 single "Chic C'est la Vie" by Luann de Lesseps was called "stunningly un-self-aware and over the top" by a critic?
... that Philadelphia Phillies backup catcher Andrew Knapp changed his number in 2018 to honor Roy Halladay and then a second time in 2020 to honor Dick Allen?
... that in Open Wounds, Vicken Cheterian argues that "by censoring the Armenian Genocide, its impact, traces and consequences do not simply disappear. It continues in various forms"?
... that actress Bertha Belmore starred in the Ziegfeld Follies of 1925 with W. C. Fields and Will Rogers?
... that Class 1 protected forests in Sabah, such as Tenompok Forest Reserve, Tawai Forest Reserve, Binsuluk Forest Reserve, and Ulu Telupid Forest Reserve, are threatened by encroaching agriculture, illegal logging, and man-made fires?
... that Canadian geneticist Phyllis McAlpine was among the first to promote a unified gene nomenclature system and helped found the HUGO Gene Nomenclature Committee?
... that there is a mountain of gold in French Guiana?

2 May 2021

12:00, 2 May 2021 (UTC)

Sussex Drive and the Royal Canadian Mint, circa 1920

... that Sussex Drive (pictured) forms part of a ceremonial route used by foreign dignitaries and royal visitors to Canada?
... that Mikoto Misaka, a fictional character from A Certain Magical Index, inspired the name of Bilibili, a real-life streaming service?
... that the Fuller Building, with a black granite base and limestone tower, has been called "the Brooks Brothers of Art Deco"?
... that in 1908, Louisa Wilkins went to Damascus without local language skills, wearing long skirts and riding side saddle?
... that Kanye West and Spike Jonze expanded a music video for "See You in My Nightmares" into the film We Were Once a Fairytale?
... that Rumahis ibn Abd al-Aziz, the governor of Palestine for Caliph Marwan II, escaped to Islamic Spain where he became governor of Algeciras and Sidonia?
... that the Christuskirche, a German Protestant parish church in Paris completed in 1894, has been a venue for performances of Bach's Christmas Oratorio?
... that the Cloud9 League of Legends division won back-to-back League of Legends Championship Series titles in their first two seasons of existence?

00:00, 2 May 2021 (UTC)

Detail from Matilda de Bailleul's illuminated psalter

... that Euphemia de Walliers made additions to the illuminated psalter (detail pictured) left by her predecessor as Wherwell Abbey's prioress, Matilda de Bailleul?
... that a researcher at the Electronic Frontier Foundation described Google's Federated Learning of Cohorts as "a technology that should not exist"?
... that although they were positioned just a few miles away, the soldiers of George Johnstone's brigade were unaware of the Battle of Waterloo taking place?
... that "Der am Kreuz ist meine Liebe" (He on the Cross is my love) is the first line of four hymns from the 17th, 18th and 20th centuries?
... that Camillo Vaz managed Paris Saint-Germain Féminine when they qualified for the UEFA Women's Champions League for the first time?
... that officially sanctioned methods to combat drought in Turkey include better protecting river basins, building underground dams, rainwater harvesting, using more grey water, and praying for rain?
... that classicist Alfred Klotz wrote a textbook promoting scientific racism that turned out to be a commercial failure?
... that Dendroides canadensis larvae alternate between two different adaptive mechanisms to survive in subzero temperatures?

1 May 2021

12:00, 1 May 2021 (UTC)

Charles A. Bevilacqua

... that US Navy Seabee Charles A. Bevilacqua (pictured) was chief builder of the original South Pole station?
... that Andrew Guest wrote "Advanced Dungeons & Dragons" despite having no experience playing the titular game?
... that Anna-Liisa Tiekso dropped out of university in 1951 to become the youngest member of the Finnish parliament?
... that the shrimp Processa edulis is white during the day and pink at night?
... that French rugby union referee Aurélie Groizeleau also breeds almost 7,000 pairs of pigeons?
... that the 1989 manga Sweet Spot by Yutsuko Chūsonji originated the slang term oyaji gal, used to describe young businesswomen who have the interests and hobbies of middle-aged businessmen?
... that Terence Lam, who initially did not plan to become a singer, received ViuTV Chill Club's best male singer award and Commercial Radio Hong Kong's best new artist award?
... that the supermarket Omega Mart has nut-free salted peanuts available for purchase?

00:00, 1 May 2021 (UTC)

14th-century gold-ground Madonna and Child

... that the use of a gold background (example pictured) has been prevalent for some types of art from Europe to Japan?
... that Helen D'Amato was appointed to a three-year term as Malta's commissioner of children, but held the role for nearly twice as long after her term expired without a successor being designated?
... that because the globose octopus Bathypolypus sponsalis lives at great depths, it has large eggs, reduced gills, and no ink sac?
... that Gira Sarabhai and her brother Gautam were crucial in the formation of the National Institute of Design in Ahmedabad?
... that upon its completion, 400 Madison Avenue in New York City was described as one of several buildings that comprised the "Grand Canyon of midtown business"?
... that Captain John T. Newton commanded USS Missouri on the first crossing of the Atlantic by an American steam-powered warship, and was later court-martialed after an accidental fire sank the ship?
... that the 1975 book Fighting Auschwitz: The Resistance Movement in the Concentration Camp was the first work to discuss in detail the story of the resistance's founder, Witold Pilecki?
... that Rocking the Boat believes that kids are built by boats?

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