All articles starting with L
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Leatherman (vagabond)
The Leatherman, also known as the Old Leather Man, was an unidentified vagabond who walked a 365-mile loop through Connecticut and New York from about 1857 until his death in 1889.
Leatherstocking Tales
The Leatherstocking Tales are five novels by James Fenimore Cooper (1823–1841) following frontiersman Natty Bumppo, also called Hawkeye, Deerslayer, Pathfinder, and Leatherstocking, across the eighteenth-century American frontier.
LEAV Aviation
LEAV Aviation is a German charter and ACMI airline headquartered in Cologne, founded in 2020, which operates Airbus A320-200 aircraft on wet-lease contracts and scheduled leisure flights under the IATA code KK.
Leave Her to Heaven
Leave Her to Heaven (1945), John M. Stahl's Technicolor melodrama-noir adapted from Ben Ames Williams's novel, stars Gene Tierney as the murderous, obsessively jealous Ellen Berent; Fox's biggest 1940s hit, it won Leon Shamroy a color cinematography Oscar.
Leave Home
Leave Home is the Ramones' second studio album, issued on Sire in early 1977, produced by Tony Bongiovi and Tommy Ramone; noted for "Pinhead," the pulled "Carbona Not Glue," and its 2017 40th-anniversary deluxe reissue.
Leave It to Beaver
Leave It to Beaver, American family sitcom (1957–1963, CBS then ABC) created by Joe Connelly and Bob Mosher, starring Jerry Mathers as Beaver Cleaver; 234 episodes, modest ratings, enduring syndication fame.
Leave No Trace
Leave No Trace (LNT) is an outdoor ethics program and Boulder, Colorado nonprofit built on seven minimum-impact principles, developed with US federal land agencies since the 1980s and studied for effectiveness and critique.
Leave No Trace (film)
Leave No Trace (2018) is Debra Granik's drama, adapted with Anne Rosellini from Peter Rock's novel My Abandonment, starring Ben Foster and Thomasin McKenzie as an off-grid father and daughter near Portland, Oregon; released by Bleecker Street with a 100% Rotten Tomatoes score.
Leave of absence
Leave of absence: extended time away from work. In the US, governed by the FMLA (12 weeks unpaid job-protected leave), ADA accommodation leave, state workers' compensation, and state paid leave programs.
Leave the World Behind (film)
Leave the World Behind (2023) is Sam Esmail's Netflix apocalyptic thriller adapted from Rumaan Alam's novel, starring Julia Roberts, Ethan Hawke, Mahershala Ali, and Myha'la; executive produced by the Obamas, it was Netflix's most-viewed 2023 film.
Leave the World Behind (novel)
Leave the World Behind, Rumaan Alam's 2020 Ecco novel (his third), strands two families in a remote Long Island rental during an unexplained catastrophe; National Book Award finalist, later a Netflix film with Julia Roberts and Denzel Washington.
Leave-one-out cross-validation
Leave-one-out cross-validation (LOOCV) is a resampling method that estimates a model's out-of-sample prediction error by repeatedly leaving out one observation, equivalent to k-fold cross-validation with k equal to the sample size.
Leavening agent
Leavening agent: substances that generate gas (air, steam, CO2, ammonia) to raise doughs and batters, in three forms: biological (yeast, sourdough), chemical (baking soda, baking powder, phosphates), and physical (air, steam).
Leavenworth, Washington
Leavenworth, Washington, a Cascade Mountain city of about 2,000, is a former logging and Great Northern Railway town rebuilt in Bavarian style from 1965 as a private tourism strategy, drawing over a million annual visitors.
Leaves of Grass
Leaves of Grass is Walt Whitman's lifelong poetry collection, self-published in Brooklyn in 1855 as twelve untitled poems and expanded to almost 400 poems across six lifetime editions, ending with the 1891-92 deathbed edition.
Leaves of the Banyan Tree
Leaves of the Banyan Tree is a 1979 novel by Samoan writer Albert Wendt, following three generations of a family in Western Samoa under colonial rule.
Leaving group
A leaving group is an atom or group, charged or uncharged, that detaches from the main part of a substrate in a specified reaction, such as chloride in chloroalkane hydrolysis.
Leaving Jingci Temple at Dawn to See Off Lin Zifang
"Leaving Jingci Temple at Dawn to See Off Lin Zifang" (晓出净慈寺送林子方) is a 1187 quatrain by the Southern Song poet Yang Wanli, written to farewell his friend Lin Zifang.
Leaving Las Vegas
Leaving Las Vegas, 1995 drama by Mike Figgis adapted from John O'Brien's semi-autobiographical novel; Nicolas Cage as alcoholic Ben Sanderson and Elisabeth Shue as Sera; Cage won the 1996 Best Actor Oscar; shot on Super 16mm for $4 million.
Leaving Neverland
Leaving Neverland is Dan Reed's 2019 two-part HBO documentary in which Wade Robson and James Safechuck allege Michael Jackson abused them as children; Emmy-winning, later removed from streaming after a Jackson estate settlement.
Leaving Neverland 2: Surviving Michael Jackson
Leaving Neverland 2: Surviving Michael Jackson is a 2025 Channel 4 documentary by Dan Reed following Wade Robson and James Safechuck's decade-long court quest against Michael Jackson's companies, ahead of a planned late-2026 trial.
Leaving on a Jet Plane
"Leaving on a Jet Plane" is a 1966 John Denver folk song that became the folk trio Peter, Paul and Mary's only number-one hit in 1969.
Leaving the world a better place
Leaving the world a better place: ethical maxim from Baden-Powell's 1937 Last Message to Scouts and Bessie Anderson Stanley's 1904 success definition; basis of Leave No Trace outdoor ethics, the software Boy Scout Rule, and intergenerational justice debates.
Leazes Park Stadium
Leazes Park Stadium: unbuilt Newcastle United stadium proposals for Leazes Park and Castle Leazes, Newcastle, next to St James' Park; Sir John Hall's 1995 55,000-seat £65m scheme and a 2025 65,000-capacity £1.2bn plan, both blocked by park protection.
Lebăda Est Oil and Gas Field
Lebăda Est, also known as Lebada East, is an operating oil and gas field on Romania's Black Sea shelf, operated by OMV Petrom, with production since 1987.
Lebăda Vest Oil and Gas Field
Lebăda Vest (Romanian for West Swan) is an offshore oil and gas field in the Romanian Black Sea, about 95 km from Constanța, operated by OMV Petrom since 1993.
Lebanese amber, Mdeyrij-Hammana (LU collection) Formation
Mdeyrij-Hammana (LU collection) amber deposit, Hammana-Mdeyrij, Baabda District, Mount Lebanon, Lebanon; Early Barremian (~125 Ma) Lebanese amber in clay-sandstone of the Chouf Sandstone-Abeih boundary, rich in hymenopteran and other arthropod inclusions from araucariaceous or cheirolepidiaceous conifers.
Lebanese Arabic
Lebanese Arabic (اللهجة اللبنانية) is the northern variety of Levantine Arabic, the main informal spoken language of Lebanon, spread widely by Lebanese music, television, and diaspora.
Lebanese Armed Forces (القوات المسلحة اللبنانية)
The Lebanese Armed Forces (Lebanese Army) is the unified military of Lebanon. It has received over $3 billion in US assistance since 2006 to secure the country.
Lebanese Civil War (الحرب الأهلية اللبنانية)
Lebanese Civil War (الحرب الأهلية اللبنانية), 1975-1990 sectarian conflict begun with the Ain El-Remmaneh bus attack, ended by the Taif Agreement and Aoun's October 1990 surrender; about 150,000 killed, 17,000 missing, Hezbollah alone kept its weapons.