519,064 articles
Arkansas Nuclear One
Arkansas Nuclear One is a two-unit pressurized water reactor plant on Lake Dardanelle near Russellville, Arkansas, the state's only operational nuclear power plant, owned by Entergy since 1974.
Arkansas Razorbacks baseball
The Arkansas Razorbacks baseball team, known as the Diamond Hogs, is the University of Arkansas college baseball program in Fayetteville, founded in 1897, competing in the SEC.
Arkansas Razorbacks football
Arkansas Razorbacks football, University of Arkansas Fayetteville team founded 1894, SEC Western Division member since 1992 after leaving the SWC; claims the disputed 1964 national title, 13 SWC championships, coached since 2025 by Ryan Silverfield.
Arkansas Razorbacks men's basketball
Arkansas Razorbacks men's basketball: University of Arkansas, Fayetteville SEC program since 1923-24. Six Final Fours, 1994 NCAA champions under Nolan Richardson's "40 Minutes of Hell," 1995 runner-up, coached since 2024 by John Calipari at Bud Walton Arena.
Arkansas River
The Arkansas River is a major tributary of the Mississippi River, rising in the Rocky Mountains near Leadville, Colorado, and flowing about 1,460 miles through Kansas, Oklahoma, and Arkansas.
Arkansas State University
Arkansas State University (A-State), public university in Jonesboro, Arkansas, founded 1909 as an agricultural school, university status 1967, Carnegie R2, 17,926 fall 2025 enrollment, Red Wolves athletics.
Arkansas Travelers
Arkansas Travelers, Double-A Texas League baseball team in North Little Rock, Seattle Mariners affiliate; founded 1901 as Little Rock Travelers, renamed 1957, plays at Dickey-Stephens Park.
Arkaprakasa
Arkaprakasa (Arkaprakāśa), a Sanskrit Ayurvedic treatise on arka distillate preparations, traditionally ascribed to Ravana and framed as his dialogue with Mandodari; 10 chapters of 100 verses each.
Arkarua
Arkarua (Arkarua adami) is a tiny disc-shaped Ediacaran fossil from the Flinders Ranges, South Australia, described by Gehling in 1987 as possibly the earliest echinoderm; its five-grooved, skeleton-less body and debated affinity distinguish it from Cambrian echinoderms.
Arkasha Stevenson
Arkasha Stevenson: Los Angeles-based American film and television director, writer, and producer, AFI graduate, winner of the 2015 Iris Prize for Vessels; directed The First Omen (2024), a prequel to the 1976 horror film The Omen, and an untitled A24 horror film.
ArkEdge Space Inc.
ArkEdge Space Inc. (株式会社アークエッジ・スペース) is a Japanese space technology company founded in Tokyo in 2018 by Takayoshi Fukuyo, building micro-satellites and a lunar navigation system.
Arkells
Arkells are a Canadian rock band formed in 2006 in Hamilton, Ontario, named after Arkell Street near McMaster University. Five members, nine Juno Awards including record Group of the Year wins, albums from Jackson Square (2008) to Between Us (2026).
Arkema
Arkema is a French specialty chemicals and materials company headquartered at Paris La Défense, created in 2004 from Total's Chemicals branch and known for Kynar PVDF and Bostik adhesives.
Arkesilaos family
Arkesilaos family (FIN 008), a Jovian Trojan collisional asteroid family in the L4 swarm, anchored on (20961) Arkesilaos; about 35 to 37 members, 55 m/s cutoff, dynamically stable over 4.5 billion years.
Arketamine
Arketamine, also called (R)-ketamine or R-ketamine, is the R-enantiomer of the anesthetic and antidepressant drug ketamine; it is under investigation for depression and pain, is not an approved medicine, and shows fewer dissociative effects than esketamine.
Arkham
Arkham is H.P. Lovecraft's fictional Massachusetts town on the Miskatonic River, home of Miskatonic University, first named in 1920, modeled on Salem, later namesake of Arkham House, Arkham Horror, and DC's asylum.
Arkham Asylum
Arkham Asylum (Elizabeth Arkham Asylum for the Criminally Insane) is DC Comics' fictional Gotham City psychiatric hospital for Batman's insane foes, debuting in Batman #258 (1974), named from Lovecraft's Arkham, defined by Morrison/McKean's 1989 graphic novel and Rocksteady's 2009 game.
Arkham Asylum: A Serious House on Serious Earth
Arkham Asylum: A Serious House on Serious Earth is a 1989 DC Comics Batman graphic novel by Grant Morrison and Dave McKean, in which asylum inmates seize the institution and Batman confronts his guilt, told through experimental mixed-media art.
Arkham Horror
Arkham Horror: cooperative Lovecraftian board game set in 1920s Arkham, Massachusetts; Chaosium 1987 (Richard Launius), FFG 2005 revision (Kevin Wilson), 2018 third edition, Remastered Vault Series reissue; dice-pool skill checks, gates, sanity loss, Ancient One final battle.
Arkhangelsk (Архангельск)
Arkhangelsk (Архангельск), also Archangel, is a Russian city and seaport on the Northern Dvina River 27 km from the White Sea. Founded 1584 as New Kholmogory, it was Russia's only port in the 16th-17th centuries and remains a major Arctic port.
Arkhangelsk Oblast (Архангельская область)
Arkhangelsk Oblast (Архангельская область), a large northern Russian federal subject with center Arkhangelsk, includes the Nenets Autonomous Okrug, Franz Josef Land and Novaya Zemlya; 589.9 thousand km², 989.4 thousand people, shipbuilding and timber economy.
Arkhangelsky (Martian crater)
Arkhangelsky is a 116.83-km-wide IAU-approved impact crater on Mars at 41.09S, 335.21E, northeast of Argyre basin; named in 1979 for Russian geologist A. D. Arkhangelsky and noted for floor dunes.
Arkhip Kuindzhi (Архип Иванович Куинджи)
Arkhip Kuindzhi (Архип Иванович Куинджи), Greek-origin Russian/Ukrainian landscape painter (c. 1842–1910), famed for luminous works like Moonlit Night on the Dnieper, Academy professor, philanthropist, Kuindzhi Society founder.
Arkie Whiteley
Arkie Whiteley (Arkje Deya Whiteley, 1964-2001), Australian actress, only child of painter Brett Whiteley and Wendy Whiteley; known for Prisoner (1982) and Razorback (1984), died of adrenal cancer at 37.
Arknights (アークナイツ) (TV series)
Arknights (アークナイツ) is the TV anime adaptation of Hypergryph's mobile tower-defense game, produced by Yostar Pictures and directed by Yuki Watanabe. Three seasons: Prelude to Dawn (Oct 28, 2022), Perish in Frost (Oct 2023), and Rise from Ember (July 2025), covering main-story chapters through 8.
Arknights (明日方舟)
Arknights (明日方舟) is a 2019 free-to-play anime tower defense gacha mobile game by Shanghai's Hypergryph, published globally by Yostar from January 2020; set on Terra, it passed $700M revenue by 2021 and spawned the anime Prelude to Dawn and the 2026 spin-off Arknights: Endfield.
Arknights: Endfield
Arknights: Endfield (明日方舟：终末地) is Hypergryph's free-to-play 3D real-time strategy RPG, released worldwide January 22, 2026, combining semi-open world ARPG combat with AIC factory automation on Talos-II.
Arkon
Arkon, sometimes called Arkon the Magnificent, is a Marvel Comics character created by Roy Thomas and John Buscema, first appearing in The Avengers #75 in 1970.
Arkona
Arkona (Аркона) is a Russian pagan and folk metal band formed in Moscow in 2002, fronted by vocalist Masha 'Scream' Arkhipova and signed to Napalm Records.
Arkose Labs
Arkose Labs is a private fraud-prevention and bot-management company founded in 2016 and headquartered in San Mateo, California, with offices in London, Costa Rica, and Brisbane.