Cards starting with A
11,854 cards. Page 170 of 198.
Apocalypse originally meant revelation, not the end of the worldTo scholars, an apocalypse is not a catastrophe at all. The Greek word means an unveiling: a heavenly messenger shows a human secrets about the cosmos, the past or the future. The…
Apokolips is a planet-wide city of misery, ruled by fear and eternal war.In the DC Universe, Apokolips stands as the ultimate dystopian nightmare. Entirely covered by a single, sprawling city, this world is fueled by the suffering of its downtrodden in…
Apollo 11’s commander took humanity’s first lunar stepsNeil Armstrong (5 August 1930–25 August 2012), Apollo 11 commander, was the first human to walk on the Moon, in July 1969. A naval aviator, test pilot and later professor, he had …
Apollo 13's crew got home using a lunar lander as a lifeboat.Two days into the flight to the Moon in April 1970, an oxygen tank exploded and crippled Apollo 13's main spacecraft. The three astronauts retreated into their small lunar lander,…
Apollo 14 returned the Apollo program to the Moon after the near-disaster of Apollo 13.Following the aborted Apollo 13 mission, the crew of Apollo 14 successfully touched down in the Fra Mauro highlands. This mission, commanded by the first American in space, Alan S…
Apollo 17 caught Earth looking like a glass marbleOn 7 December 1972, roughly 29,400 kilometers from Earth, an Apollo 17 Hasselblad froze Africa from the Mediterranean to Antarctica. The cropped, rotated frame became one of histo…
Apollo 17 was the final human mission to the Moon, driven by scientific ambition.As the last crewed mission beyond low Earth orbit until 2026, Apollo 17 transformed lunar exploration. By sending a professional geologist to the Taurus-Littrow valley, NASA shift…
Apollo 7 was a technical triumph marred by colds, crankiness, and cabin tensionLaunched in October 1968, Apollo 7 was the first crewed mission of the Apollo program. While it proved the command module could support a lunar voyage, the mission is remembered f…
Apollo asteroids are rocky wanderers that frequently cross paths with our own planet's orbit.These near-Earth objects are defined by their unstable trajectories, which often intersect with the path of our world. While they populate the solar system in vast numbers, their …
Apollo healed plagues and sent them, sometimes with the same arrowsThe Greek god of light and music also carried a bow that could spread deadly disease. Apollo guarded shepherds' flocks, children growing into adults and the doorways of houses, an…
Apollo started as a spacecraft project, not a plan to land on the MoonWhen NASA manager Abe Silverstein picked the name Apollo one evening in early 1960, picturing the god driving his chariot across the Sun, nobody had committed to a lunar landing. …
Apollo: The Olympian God Who Governed Everything From Healing to Deadly PlaguesApollo was one of the most revered figures in Ancient Greek mythology, balancing roles as a patron of music and medicine with the power to unleash disease. This video examines his…
Apollonius named the ellipse, parabola and hyperbola after a bookkeeping ideaSlice a cone at different angles and you get three curves whose names we owe to Apollonius of Perga. They come from a Greek geometric test of whether an area fits a square exactly…
Apotheosis is the ancient practice of elevating humans, ideas, or rulers to divine status.From pharaohs in Egypt to Roman emperors and modern religious movements, the desire to bridge the gap between mortal and divine has shaped history. Whether through state-sanctione…
Apple built Safari because it was tired of relying on Microsoft's browserFor years Macs shipped with Internet Explorer as the default, under a 1997 deal with Microsoft. On 7 January 2003 Steve Jobs unveiled Apple's own answer, which he called a turbo b…
Apple designs its own chips but has never owned a factory to make themEvery Apple chip, from the iPhone's processor to the M1 that moved the Mac off Intel, is designed in-house and built by someone else, first Samsung and later TSMC. Apple even sell…
Apple dreamed up the iPad before the iPhone, then put it on holdThe iPad's roots run deeper than the iPhone's. Designer Jonathan Ive sketched a stylus tablet in 1991, and Apple began a larger tablet prototype, codenamed K48, in 2004. Ive wante…
Apple finally enters the foldable market with the dual-screen iPhone DuoAfter years of patent filings and industry speculation, Apple has launched the iPhone Duo. This foldable device marks a significant shift in the company's hardware strategy, blend…
Apple once licensed its Macintosh technology to create a failed, open-standard gaming console platform.In the mid-1990s, Apple attempted to expand its market share by licensing the Macintosh architecture to third-party manufacturers. The resulting Pippin platform was designed as an…
Apple once sold a wireless router that doubled as a personal backup vault.Before Apple exited the networking market, it offered the AirPort Time Capsule. This device combined a high-speed router with internal storage, designed to automate Mac backups wi…
Apple once tried to replace the traditional app with a document-centric, modular future.Before the modern app store, Apple bet on OpenDoc: a framework that turned software into interchangeable, reusable components. Instead of monolithic suites, users would build docu…
Apple TV began as a hobby box after several failed living-room gadgetsBefore the Apple TV, Apple tried the living room and flopped. The 1993 Macintosh TV sold just 10,000 units, and the 1995 Pippin console around 42,000. The streaming box that final…
Apple-foothill Almaty outgrew its years as capitalAlmaty is Kazakhstan’s largest city, with more than two million people in the Trans-Ili Alatau foothills at 700–900 metres near Kyrgyzstan. Capital until the 1997 shift to Astana,…
Apple's Lightning connector was a design marvel that ultimately fell to global regulatory pressure.Introduced in 2012 to replace the bulky 30-pin dock, the reversible Lightning connector became a staple of the Apple ecosystem. Yet, despite its compact size and clever engineerin…
Apple's Lisa pioneered the mouse-driven desktop and ended up in a Utah landfillIn 1989 Apple buried roughly 2,700 unsold Lisa computers in a guarded landfill in Logan, Utah, to claim a tax write-off. Six years earlier the Lisa had launched as the first mass-…
Apple's streaming service gave itself away for years before winning Best PictureWhen Apple TV+ launched on 1 November 2019 at $4.99 a month, Apple handed a free year to anyone buying a new iPhone, iPad or Mac, then stretched that giveaway twice more to July 2…
Applejack: The Colonial American Spirit That Once Fueled Presidents and Tavern KeepersLong before bourbon dominated the American palate, applejack was the nation's original spirit. Born in colonial New Jersey, this potent apple brandy was crafted by freezing hard c…
Apples, almonds and strawberries all belong to the rose familyA fruit bowl holding an apple, a peach, a cherry and a handful of raspberries is really a family reunion. All belong to the Rosaceae, along with almonds, pears, apricots and the r…
Applied linguistics is the practical science of solving real-world problems through language analysis.Far from being a purely theoretical pursuit, applied linguistics is an interdisciplinary field dedicated to addressing language-related challenges. By drawing on psychology, socio…
Applied maths is a craft of models, not a single syllabusApplied mathematics puts mathematical methods to work in physics, engineering, medicine, finance, computing, and industry. Practitioners build and study models of real problems, y…
Applied mechanics is the bridge between abstract physical theory and our tangible, engineered world.While pure mechanics explores how bodies respond to forces in theory, applied mechanics brings those principles into the physical realm. It is the essential discipline that allows…
Applied science turns abstract theories into practical solutions for the real worldWhile basic science seeks to explain the laws of nature, applied science bridges the gap between theory and utility. From engineering to medicine, it uses empirical methods to sol…
Applying cancer research methodologies to fix national governmentsWhat happens when a cancer researcher treats a country's bureaucracy like a biological system? Charity Wayua shares how she applied scientific rigor to Kenya's government to unloc…
Applying civil engineering principles to build a functional wall-mounted cat treeA civil engineer demonstrates how to design a wall-mounted cat tree for his kitten, Hank. This project serves as a practical application of engineering statics, showing how to cal…
Approximating Area: How Riemann Sums Turn Tables into GeometryLearn how to estimate the area under a curve using only a set of discrete data points. This video demonstrates the practical application of Riemann sums when you lack a continuous…
Apraxia is a neurological disconnect where the brain knows the goal but fails the execution.Imagine wanting to speak, wave, or open your eyes, but your body refuses to follow the command. Apraxia is not muscle weakness or paralysis; it is a breakdown in the brain's abili…
Aqaba: The ancient port city that has been a global trade hub for millenniaSituated at the northeastern tip of the Red Sea, Aqaba is Jordan's only coastal city. From its origins as a copper-trading center in the Chalcolithic period to its role as a strat…
Aqib Talib: The Student Who Became a Master of the NFL SecondaryNamed for the Arabic word meaning student, Aqib Talib evolved from a two-star high school recruit into a Super Bowl champion. His career was defined by elite defensive instincts a…
Aqidah is the Islamic term for creed, but it means far more than belief.Derived from the Semitic root for tying a knot, aqidah represents the systematic architecture of Islamic theology. While it encompasses the fundamental articles of faith shared by…
Aquarium ‘plecos’ are Earth’s largest catfish familyLoricariidae holds more than ninety genera and just over 680 species—the biggest catfish family on the planet. Armoured in bony plates and fitted with suckermouths, they range fro…
Aqueducts are older than Rome by well over a thousand yearsAqueducts call to mind Roman arches, but the Minoans of Crete were probably building them around 2000 BC. By the 7th century BC the Assyrians had run an 80-kilometre limestone cha…
Aquifers are not underground rivers, but vast, porous reservoirs of life-sustaining water.Forget the image of rushing subterranean streams. Aquifers are actually dense, water-saturated rock formations that act as the Earth's hidden plumbing. These vital geological laye…
Aquila: The Celestial Eagle Carrying Ancient Myths and Massive Cosmic Structures Across Our SkyLocated along the Milky Way, the constellation Aquila is a treasure trove of stellar history and mythology. From the rapid rotation of its brightest star, Altair, to the massive H…
Aquinas and Bertrand Russell agreed on the rules for believing in GodThomas Aquinas and Bertrand Russell reached opposite conclusions about God, yet they shared a principle: belief is rational only when backed by sufficient evidence. Their quarrel …
Aquinas, the towering medieval thinker, refused to call himself a philosopherTo medieval scholars, philosophers were pagans like Plato and Aristotle. Thomas Aquinas even complained that they fell short of true wisdom. Yet thinkers who saw philosophy as the…
Ara macaws take their name from a Tupi squawkBernard Germain de Lacépède coined Ara in seventeen ninety-nine for Neotropical macaws whose bare facial patches and long tails define the look. The name echoes Tupi ará, an onoma…
Ara: The Ancient Altar That Once Bound the Greek Gods in Celestial AllegianceDeep in the southern sky lies Ara, a constellation representing the altar where Zeus and his allies swore their oaths before battling the Titans. Though it lacks brilliant stars, …
Arab Christians and Jews said Allah before Islam existed, and many still doAllah is simply the Arabic word for God. Pre-Islamic Arab Christians wrote it in inscriptions and poems and reportedly shouted it as a battle cry, and today Arabic-speaking Jews a…
Arab Christians have shaped Middle Eastern culture for centuries, yet their identity remains complex.From the early tribes of pre-Islamic Arabia to the intellectual leaders of the Nahda renaissance, Arab Christians have been central to the region's history. Today, they remain a s…
Arabia still crumples Iran into the Zagros foldsThe Zagros Mountains run about 1,600 kilometres across western Iran, southeastern Turkey, and northern Iraq. Miocene collision between the Arabian and Eurasian plates folded Paleo…
Arabic “Islands of the Moon” sit in the Mozambique ChannelThe Union of the Comoros gathers three islands at the Mozambique Channel’s north end, capital Moroni, with Islam as predominant and official faith. At 1,659 square kilometres it i…
Arabic “shore” names Africa’s Sahara-edge transition beltThe Sahel—from Arabic sāḥil, coast or shore—is the hot semi-arid transition between Sahara desert and wetter Sudanian savannas. It stretches about 5,900 kilometres from Atlantic t…
Arabic falsafa reshaped almost every branch of medieval European thoughtWhen Latin scholars translated Arabic philosophical texts, nearly every discipline in medieval Europe was transformed, from psychology to metaphysics. The Arabic word for this ent…
Arabic grammar evolved through two competing schools that defined the language for centuriesArabic grammar is a complex architecture of morphology, syntax, and rhetoric. While Classical and Modern Standard Arabic share a formal structure, spoken dialects have simplified …
Arabic has two words for nationalism, and they pull in opposite directionsIn Arabic, qawmiyya means loyalty to one Arab nation stretching from the Atlantic to the Arabian Sea. Wataniyya means loyalty to your own country, such as Egypt or Syria. For much…
Arabic is not a single language but a vast, diverse family of regional varieties.Arabic speakers navigate a world of diglossia, balancing a standardized formal language with local vernaculars that differ significantly from one another. While some organizations…
Arabic maqam is a complex system of melodic modes that transcends Western musical scales.The Arabic maqam is far more than a simple scale; it is a sophisticated technique of improvisation and tonal-spatial organization. Defined by microtonal intervals and specific mel…
Aracaju: The Purpose-Built Coastal Capital Designed to Solve a Centuries-Old Logistics ProblemFounded in 1855, Aracaju was not a product of organic growth but a deliberate administrative intervention. By relocating the capital from the inland city of São Cristóvão to the c…
Arachnids wear eight legs and a weaver's mythClass Arachnida corrals spiders, scorpions, ticks, mites, harvestmen, and stranger chelicerates. Adults typically sport eight walking legs on a fused cephalothorax, plus chelicera…
Aragon stretches from Pyrenean glaciers to a desert-dry steppe and an inland seaOne Spanish region packs in the highest summit of the Pyrenees, summers above 40 degrees Celsius, a fierce northwest wind with its own name and a reservoir locals call the Sea of …
Intellect Plus