All articles starting with H
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Hollywoodland
Hollywoodland is a 2006 American mystery drama directed by Allen Coulter, in which Adrien Brody plays a private detective investigating Superman actor George Reeves's disputed 1959 death.
Holm of Burrafirth
Holm of Burrafirth, a small tidal island in East Burra Firth on Mainland, Shetland, cut off from the shore only at high tide; distinct from the Unst namesake holms of Burra Firth.
Holm of Grimbister
Holm of Grimbister is a small inhabited tidal islet in the Bay of Firth, Orkney, Scotland, near Finstown on Mainland Orkney and joined to it by a causeway.
Holmby Hills, Los Angeles
Holmby Hills is a neighborhood of large estates in western Los Angeles, between Beverly Hills and Bel Air, known for Period Revival mansions, Harold Lloyd's Greenacres, and the Playboy Mansion.
Holmdel Horn Antenna
The Holmdel Horn Antenna is a microwave horn antenna at Bell Labs' Crawford Hill site in New Jersey, used in the discovery of the cosmic microwave background.
Holme House
Holme House, Piercebridge: a Romano-British villa on the River Tees near Piercebridge, County Durham, evolving from an Iron Age roundhouse enclosure; excavated 1969-70 by D. W. Harding, dismantled by about AD 200.
Holmen
Holmen is a Swedish forest industry group headquartered in Stockholm that owns about 1 million hectares of forest and produces paperboard, printing paper, sawn wood products, and renewable energy.
Holmenkollbakken
Holmenkollbakken is a large ski jumping hill in the Holmenkollen district of Oslo, Norway, with a K-point of 120 meters, hosting competitions since 1892 and the 1952 Winter Olympics.
Holmenkollmedaljen
Holmenkollmedaljen, Norway's highest skiing honor, instituted 1894 by Skiforeningen, first awarded 1895 to Victor Thorn; awarded for multi-year excellence in Nordic skiing and biathlon, first para recipient Nils-Erik Ulset in 2026.
Holmes (Martian crater)
Holmes is a 122 km (also measured 114.06 km) impact crater on Mars near 75 degrees south, IAU-approved in 1973 and named for Arthur Holmes, the British geologist (1890-1965); Gazetteer Feature ID 2544, quad mc30.
Holmes & Watson
Holmes & Watson is a 2018 American comedy film starring Will Ferrell as Sherlock Holmes and John C. Reilly as Dr. Watson, directed by Etan Cohen.
Holmes and Rahe stress scale
The Holmes and Rahe stress scale, also known as the Social Readjustment Rating Scale, is a 43-item checklist ranking life events by weighted stress scores, published in 1967.
Holmes Chapel
Holmes Chapel, formerly Church Hulme, is a large Cheshire East village near M6 Junction 18, on the Crewe to Manchester rail line; population 6,669 in 2021, known for its 1753 fire, conservation area, and Harry Styles.
Holmes-Adie syndrome
Holmes-Adie syndrome, also called Adie syndrome or tonic pupil-tendon areflexia syndrome, is a benign disorder of ciliary ganglion denervation causing a tonic pupil with light-near dissociation plus absent tendon reflexes, described by Adie and Holmes in 1931.
Holmgang
Holmgang (Old Norse hólmganga, "island-going") was the formal, rule-governed Norse duel of the Viking Age, fought on a small island or delimited space, distinct from the looser einvígi, and banned in Iceland about 1006 and in Norway by 1015.
Holmi (Cilicia)
Holmi, also Holmoi, was an ancient Greek harbor town in Cilicia Tracheia at modern Taşucu, Turkey, minting silver coins in the 4th century BC before its people were resettled at Seleukeia.
Holmium
Holmium is a silvery chemical element with symbol Ho and atomic number 67, a rare earth metal with the strongest magnetic moment of any element.
Holmium laser enucleation of the prostate
Holmium laser enucleation of the prostate (HoLEP) is a transurethral operation for benign prostatic hyperplasia that peels the entire adenoma away and morcellates it, working for glands of any size.
Holmium-doped fiber
A holmium-doped fiber is an optical fiber whose core is doped with holmium ions so it can amplify or generate laser light near 2.1 µm.
Holocarboxylase synthetase
Holocarboxylase synthetase (HCS/HLCS) is the mammalian biotin protein ligase that attaches biotin to five carboxylases via biotinyl-AMP; its deficiency causes neonatal multiple carboxylase deficiency, treated with high-dose biotin.
Holocarboxylase synthetase deficiency
Holocarboxylase synthetase deficiency (HLCS deficiency, early-onset multiple carboxylase deficiency) is an autosomal recessive disorder of biotin metabolism caused by HLCS gene mutations, presenting in infancy with metabolic acidosis, rash, and seizures, treated with oral biotin.
Holocaust (miniseries)
Holocaust: The Story of the Family Weiss is NBC's four-part 1978 miniseries directed by Marvin J. Chomsky, written by Gerald Green, starring Meryl Streep and Michael Moriarty, seen by 120 million Americans and a landmark of West German memory culture in 1979.
Holocaust denial
Holocaust denial is the attempt to negate the established facts of the Nazi genocide of European Jews, claiming the six million deaths, systematic murder policy, and Auschwitz gas chambers never existed; treated as antisemitism by USHMM and IHRA, criminalized in Europe but protected speech in the US.
Holocaust survivors
Holocaust survivors are people displaced, persecuted, or discriminated against by the Nazis and collaborators, 1933–1945. After 1945 about 250,000 Jewish DPs waited in Allied camps; most emigrated to Israel or the United States. About 196,600 Jewish survivors were alive in 2026.
Holocaust trains
Holocaust trains, organized by the German Reichsbahn and other European railways from 1941 to 1944, carried millions of Jews to ghettos and killing centers in occupied Poland.
Holocausto
Holocausto is a Brazilian extreme metal band formed in 1985 in Belo Horizonte, a founding act of the Cogumelo Records scene known for war-themed black and thrash metal.
Holocene
The Holocene, also known as the Holocene epoch, is the current geological epoch, beginning 11,700 years ago with warming that ended the Younger Dryas and divided since 2018 into the Greenlandian, Northgrippian, and Meghalayan stages.
Holocene and modern bivalve sclerochronology calibration studies
Bivalve sclerochronology calibration links shell growth increments and shell chemistry, especially δ18O, to dated instrumental climate measurements, turning Holocene and older bivalve shells into quantitative paleoclimate records.
Holocene calendar
The Holocene calendar, also called the Human Era calendar, adds 10,000 years to AD numbering so that year 1 falls near the start of the Holocene epoch.
Holocene extinction
Holocene extinction, also called the sixth mass extinction or Anthropocene extinction: ongoing human-driven species loss during the last ~11,500 years, with modern extinction rates estimated at tens to hundreds of times background levels, though its mass-extinction status is debated.