All articles starting with B
27,400 articles
Butterfly Effect (蝴蝶效应)
Butterfly Effect (蝴蝶效应) is a Chinese-founded AI startup, founded in Beijing in 2022, best known for the general AI agent Manus, launched in March 2025.
Butterfly Farm (Malaysia)
Butterfly Farm (Malaysia): live butterfly attractions including Entopia by Penang Butterfly Farm (founded 1986, Teluk Bahang), Melaka Butterfly and Reptile Sanctuary (1987), and Cameron Highlands farms at Kea Farm, featuring Rajah Brooke's birdwing.
Butterfly gardening
Butterfly gardening: planting nectar flowers for adult butterflies and species-specific host plants for caterpillars, from pots to acres. Requires sun, shelter, puddling spots, and no pesticides; supports declining species like the monarch.
Butterfly house
Butterfly house (lepidopterarium): a walk-through live exhibit of captive butterflies and moths in a controlled tropical glasshouse, supplied by a global pupae trade of roughly USD 100 million, distinct from open butterfly gardens.
Butterfly Jam
Butterfly Jam is Kantemir Balagov's 2026 English-language debut drama, starring Barry Keoghan, Talha Akdogan, Riley Keough, and Harry Melling, set in Newark's Circassian community; it opened Cannes Directors' Fortnight 2026 and was released in France October 7, 2026. Not the 2021 Shih-Yen Huang animated short.
Butterfly Kiss
Butterfly Kiss is Michael Winterbottom's 1995 British debut feature, a lesbian road movie starring Amanda Plummer as murderous drifter Eunice and Saskia Reeves as Miriam, written by Frank Cottrell Boyce; distinct from the 2017 drama and 2018 found-footage film Butterfly Kisses.
Butterfly knife
A butterfly knife, also called a balisong or Batangas knife, is a folding pocket knife with two handles that counter-rotate to conceal the blade, allowing one-handed opening.
Butterfly loop
Butterfly loop, or alpine butterfly knot, lineman's loop: a midline loop knot tied in a rope's bight without using the ends. It loads in any direction, isolates damaged rope, and anchors the middle climber on glacier teams; named in a 1928 Alpine Journal article.
Butterfly Lovers (梁山伯与祝英台)
Butterfly Lovers (梁山伯与祝英台, Liang Zhu) is one of China's four great folk legends: Zhu Yingtai, disguised as a man, studies with Liang Shanbo; an arranged marriage separates them, and they become butterflies. National intangible heritage since 2006.
Butterfly McQueen
Butterfly McQueen (Thelma McQueen, 1911-1995), American actress and dancer famous as Prissy in Gone with the Wind (1939); quit Hollywood in 1947 over servant typecasting, later won an Emmy and a college degree at 64.
Butterfly on a Wheel
Butterfly on a Wheel, released as Shattered in the US, is a 2007 psychological thriller directed by Mike Barker, starring Pierce Brosnan, Gerard Butler, and Maria Bello.
Butterfly optimization algorithm
The butterfly optimization algorithm is a swarm-based metaheuristic introduced by Sankalp Arora and Satvir Singh in 2018, which models butterfly foraging and mating behavior to solve global optimization problems.
Butterfly pea flower tea
Butterfly pea flower tea, also called blue tea, anchan, or bunga telang, is a caffeine-free tisane from Clitoria ternatea flowers; its ternatin anthocyanins brew blue and turn purple-pink with lemon, and the extract is an FDA-listed natural food colorant.
Butterfly Sanctuary Jardín Mágico
Butterfly Sanctuary Jardín Mágico (Mariposario Jardín Mágico), a 2019-founded butterfly sanctuary and museum in Puerto Vallarta, Jalisco, Mexico; Banderas Bay's first, offering one-hour guided tours, butterfly releases, and free education for over 2,000 students.
Butterfly stroke
Butterfly stroke, or Butterfly swimming, is a competitive swimming stroke that debuted in the 1956 Melbourne Games. It was recognized as a separate stroke by FINA in 1952.
Butterfly valve
A butterfly valve is a compact quarter-turn valve that regulates or isolates flow by rotating a disc through 90 degrees, used for water, steam, and chemicals.
Butterfly-shaped pigment dystrophy
Butterfly-shaped pigment dystrophy (BPD), a rare autosomal dominant pattern dystrophy of the retinal pigment epithelium (OMIM 169150), features bilateral lipofuscin deposits in 3–5 butterfly-wing arms at the RPE, subnormal EOG, PRPH2 mutations such as Cys213Tyr, and good prognosis.
Butterfly's Tongue
Butterfly's Tongue (La lengua de las mariposas) is a 1999 Spanish drama by José Luis Cuerda, adapted by Rafael Azcona from three Manuel Rivas stories, about a Galician boy and his republican teacher Don Gregorio, whose friendship is destroyed by the 1936 Civil War; it won the Goya for Best Adapted Screenplay.
Butterflyfish
Butterflyfish (Chaetodontidae), marine perciform reef fishes, about 114 species in 10 genera, chiefly Indo-West Pacific; deep-bodied, brightly colored, with long-snouted and coral-feeding (obligate corallivore) lineages used as reef-health indicators.
Butterfree (バタフリー)
Butterfree (バタフリー), the Butterfly Pokémon, National Dex #0012, is a Bug/Flying final evolution of Caterpie and Metapod with base stat total 395, Compound Eyes or Tinted Lens, a Gigantamax form with G-Max Befuddle in Sword/Shield, and Ash's released Butterfree in anime episode 21.
Butterley Tunnel
Butterley Tunnel is a disused canal tunnel on the Cromford Canal in Derbyshire, England, built in the early 1790s and closed permanently by mining-subsidence collapses in 1900.
Buttermilk
Buttermilk: a low-fat dairy liquid, either the byproduct of churning cream into butter or, as commonly sold, cultured buttermilk made by fermenting skim milk with Lactococcus lactis starter cultures.
Butternut squash
Butternut squash, a cultivar group of Cucurbita moschata, is a winter squash with sweet orange flesh; the shortnecked type arose in the 1930s from a crookneck cultivar, Waltham is the standard cultivar, and it stores best at 15°C.
Butters Stotch
Leopold "Butters" Stotch is a South Park character voiced by Matt Stone, based on co-producer Eric Stough, debuting in "Two Guys Naked in a Hot Tub" (1999); briefly the fourth boy in season 6, later Professor Chaos, known for naivety and harsh grounding by his parents.
Butters' Very Own Episode
Butters' Very Own Episode is South Park season 5, episode 14 (December 12, 2001), written by Trey Parker. The season finale introduces Butters as Kenny's replacement, with a sitcom theme song, his mother's murder attempt, and parodies of O.J. Simpson, Gary Condit, and the Ramseys.
Butterscotch
Butterscotch is a candy, sauce, and flavor made by cooking butter with brown sugar, distinct from white-sugar caramel and from toffee, which is butterscotch cooked to hard crack. Dating to 1802, famously from Doncaster.
Butterworth filter
The Butterworth filter, also called the maximally flat filter, is an electronic or digital signal filter with no passband ripple, designed by Stephen Butterworth in 1930 and widely used in audio.
Butterworth, Seberang Perai
Butterworth is the main town of Seberang Perai, mainland Penang, Malaysia, home to Penang Sentral transport hub, the KTM/ETS railway station, the historic ferry link to George Town, and the planned Mutiara Line LRT terminus.
Butthole Surfers
Butthole Surfers: American experimental rock band formed 1981 in San Antonio by Gibby Haynes and Paul Leary; acid punk, notorious name and live shows, 1996 hit "Pepper," lost album After the Astronaut released 2026.
Butthole Surfers: The Hole Truth and Nothing Butt
Butthole Surfers: The Hole Truth and Nothing Butt is a 2025 Tom Stern documentary about the Texas art-punk band Butthole Surfers, premiered at SXSW 2025, released theatrically August 2026 via Alamo Exclusives and Sumerian Pictures, with interviews of Linklater, Grohl, Flea, and others.