Intellect PlusCards starting with H
40,576 cards. Page 54 of 677.
Haile Gebrselassie ran with a crooked arm shaped by years of school runsAs a farm boy in Ethiopia, Haile Gebrselassie ran ten kilometres to school each morning and ten back each evening, books tucked under one arm. Long after he became a champion, his…
Hailed at birth as a new King Arthur, Edward II lost his crown to his wifeProphets greeted the baby born at Caernarfon Castle in 1284 as a new King Arthur. Instead Edward II lost at Bannockburn, fought his own barons over two favourites, and was finally…
Hailstones probably don't get their onion layers by bouncing up and downSlice a big hailstone and you find rings like an onion. The old explanation said stones yo-yo repeatedly through the storm, gaining a coat each trip. Field studies and theory now …
Hainaut: The Belgian province that transformed from a medieval county into an industrial powerhouse.Hainaut is a region defined by its dramatic shifts. Once a medieval county, it became the heart of Belgium's industrial revolution, earning the nickname le pays noir for its smoke…
Haiphong was mainland Southeast Asia's first electrified cityVietnam's third-largest city guards the Cấm River mouth on the Gulf of Tonkin, administering Cát Bà and Bạch Long Vĩ islands across some 3,195 square kilometres. Historically it c…
Hair-thin vessels where blood actually tradesCapillaries are the body’s smallest blood vessels—only five to ten micrometres across—built from a single-cell intima wall. Arteries narrow to arterioles, then to these hairlike t…
Haiti broke a 52-year World Cup drought despite a national crisisImagine a nation so gripped by political instability that its national team couldn't play a single home match during a World Cup qualifying campaign. Yet, through a grueling journ…
Haiti's genetic map reveals a complex history of migration and mixingWhile Haiti is often viewed through a singular lens, its DNA tells a story of deep regional diversity. From the north to the south, the country's genetic makeup shifts significant…
Haiti's Papa Doc began as a doctor fighting tropical disease among the poorIn the 1940s, François Duvalier treated Haitians suffering from typhus, yaws and malaria, and grateful patients nicknamed him Papa Doc. He kept that affectionate name for life. Ye…
Haiti’s name translates to Mountainous Land, reflecting a rugged, limestone-rich Caribbean landscape.Haiti occupies the western third of Hispaniola, a nation defined by dramatic elevation and complex topography. While its shores are rimmed with cliffs and coral reefs, the country…
Hake are deep-sea predators that perform a daily vertical migration across the ocean depths.These medium-to-large fish spend their days in the dark, deep waters of the Atlantic and Pacific, only to ascend toward the surface under the cover of night. While they are a stap…
Hakodate: The Japanese port city built on a sandbar and a resting cowPerched on a tombolo—a sandbar connecting a former island to Hokkaido—Hakodate is a city defined by its unique geography and turbulent history. From its origins as a fifteenth-cen…
Hakuin Ekaku: The Monk Who Transformed Zen Through the Power of Great DoubtHakuin Ekaku, the reviver of Japanese Rinzai Zen, believed that enlightenment was not the finish line but a starting point. By emphasizing the "great doubt" and the necessity of w…
HAL's dying song in 2001 came from a real Bell Labs computer demoIn 1961 an IBM 7090 at Bell Labs sang Daisy Bell in a synthetic voice. Arthur C. Clarke happened to be visiting a friend there and heard it. He was so struck that he wrote the mom…
Haldwani: The Himalayan Foothill Gateway That Transformed From A Forest Into A Commercial HubNestled in the Bhabar region, Haldwani serves as the vital commercial artery connecting the Indo-Gangetic Plain to the Kumaon hills. Once a dense forest of Haldu trees, this strat…
Half a century of orangutan behavior captured on filmExplore the most compelling moments of orangutan life through 50 years of BBC Earth archives. This compilation highlights rare and dramatic behaviors that showcase these primates …
Half a century of secrets from the world's oceansExplore 50 years of BBC Earth’s most compelling marine footage. This collection highlights rare and dramatic moments captured from the deep ocean floor to the surface waters of th…
Half a century of the world's most dramatic feline milestonesExplore a curated collection of tiger cub highlights spanning 50 years of BBC Earth archives. This compilation captures the rare, dramatic, and entertaining moments of these apex …
Half a death cap mushroom may hold enough toxin to kill an adultThe death cap causes about 90 percent of the world's fatal mushroom poisonings. Cooking and freezing do nothing to its toxins, it resembles prized edible species, and its smell st…
Half a Fact: The Unit That Lost an OrbiterHow a mismatch between pounds-force seconds and newton-seconds, and the checks that failed to catch it, led to the loss of NASA's Mars Climate Orbiter in 1999.
Half Earth’s photosynthesis rides on drifting microscopic plantsPlankton—from Greek planktos, “wanderer”—are water or air drifters too weak to swim against currents or wind. The cast spans bacteria and algae to jellyfish, split trophically int…
Half of American cars were Model Ts by 1918Henry Ford did not invent the assembly line, but he perfected it—and priced a car at $825 in 1908, then $360 by 1916. Fifteen million Model Ts later, he had reshaped both American…
Half of Brazil is a worn plateau that once ran with lavaThe Brazilian Highlands cover about 4.5 million square kilometres—roughly half the country—across eastern, southern, and central Brazil. Ancient basaltic floods built much of the …
Half of cardiac arrests give no warning before the pulse vanishesWhen the heart suddenly stops producing a pulse, brain blood flow collapses within seconds. About half of victims feel nothing beforehand. U.S. guidelines for 2015 counted roughly…
Half of colorectal cancers hide until screening finds themCancer of the colon or rectum can invade or spread while producing no warning at all. At least half of cases are asymptomatic until a routine check. That is why most countries scr…- Half of Hollywood tried to film Howard Hughes before Scorsese didChristopher Nolan wrote a Howard Hughes script with Jim Carrey in mind. Nicolas Cage was going to play both Hughes and his hoaxing biographer Clifford Irving. Johnny Depp, Edward …
Half of humanity eats rice, yet little of it crosses bordersRice feeds more than half the people on Earth, and 800 million tons were grown in 2023. Yet only about 8 percent is sold between countries. Most is eaten close to where it is harv…
Half of New Guinea holds staggering languages and wild speciesPapua New Guinea covers the eastern half of New Guinea plus Melanesian offshore islands north of Australia. Only about fourteen percent of people lived in cities in 2023, and the …
Half of people with high blood pressure do not know itHypertension means arteries stay under persistently high pressure, usually without any warning symptoms. About ninety to ninety-five percent of cases are primary, driven by lifest…
Half of savants are autistic; many others gained their gifts through brain injurySavant syndrome pairs a dazzling talent, often in memory, music, art or calculation, with social or intellectual impairment. It affects around one in a million people. Roughly hal…- Half of South America in one federation of 214 millionBrazil covers about half of South America and borders every country on the continent except Chile and Ecuador. With over 214 million people it ranks seventh in the world by popula…
Half of the Philippines lives on one rice-mortar-named islandLuzon is the Philippines’ largest and most populous island, home to Manila, Quezon City, and about 64.3 million people as of 2024—more than half the national total. The name likel…
Half of the world's coasts may face annual extreme sea level events by 2100Using a multi-method modeling approach, researchers projected how various levels of global warming will impact coastal hazards across more than 7,000 locations. They found that ev…
Half of the world's languages could vanish by next centuryWe often view the decline of minority speech as a natural evolutionary process, like a biological selection. But linguists argue that linguistic diversity is a fundamental truth w…
Half of Toronto was born somewhere beyond CanadaCanada's most populous city and Ontario's capital sits on Lake Ontario's northwestern harbour, ranking among North America's largest urban areas. Indigenous peoples lived on its r…
Half of U.S. invasive cancers still meet the radiation beamRadiation therapy aims ionizing beams—usually from a linear accelerator—to damage tumor DNA while sparing neighbors. About half of America’s 1.2 million invasive cancers diagnosed…
Half the republic crowds into the world’s ninth metroSouth Korea, the Republic of Korea on the southern Korean Peninsula, counts about 52 million people—half in the Seoul metropolitan area, the world’s ninth-most populous metro—betw…
Half-billion-year hunters that are mostly water and stingJellyfish are the free-swimming medusa stage of many Medusozoa within Cnidaria—gelatinous bells of mesoglea trailing stinging tentacles. They pulse for propulsion, capture prey wi…
Halifax suffered the largest man-made blast before the atomic bombOn December 6, 1917, a French munitions ship collided with a Belgian relief vessel in the Narrows of Halifax Harbour. The resulting explosion flattened the city's Richmond distric…
Hall suggests booking a table instead of cooking if your temperament is poorCarla Hall became a culinary icon by championing a philosophy that links emotional well-being directly to the quality of the plate. She argues that a chef's internal state—whether…
Hallasan is a massive shield volcano that effectively defines the identity of Jeju Island.Rising 1,947 meters above sea level, Hallasan is the highest point in South Korea. This shield volcano is so central to the local landscape that a traditional saying claims the is…
Halle: The ancient salt city that pioneered modern education and survived the centuriesHalle, a historic hub on the Saale River, holds a complex legacy. Once a salt-harvesting center dating back to the Bronze Age, it later became a cradle for Pietist education and t…
Halloween’s global journey from ancient Irish fires to modern North American candy haulsHalloween is a complex tapestry of ancient Celtic rituals, Christian observances, and secular festivities. While its roots lie in the Irish festival of Samhain, the holiday has ev…
Hallucigenia was drawn upside down and backwards before anyone got it rightWhen Simon Conway Morris named a tiny Cambrian fossil in 1977, he pictured it tottering on stiff spines with tentacles waving from its back. The name he chose, Hallucigenia, honou…
Hallucinations feel real while stimuli are missingA hallucination is a perception with the full force of reality but nothing outside to cause it. It differs from dreams, because you are awake, from illusions, where something real…
Hallucinogens alter reality by disrupting the brain's chemical communication networksHallucinogens, or psychedelics, do more than just trigger hallucinations; they fundamentally rewire how your brain processes reality. By interfering with neurotransmitters like se…
Halmahera: The Indonesian Giant Shaping the Future of Electric Vehicle BatteriesOnce known as Jilolo, Halmahera is the largest island in Indonesia's North Maluku province. While historically overshadowed by neighboring Ternate and Tidore, this volcanic landma…
Halo: Campaign Evolved marks the franchise's first multiplatform release and a technical engine shift.Released in July 2026, Halo: Campaign Evolved commemorates the 25th anniversary of the iconic shooter series. By transitioning from the proprietary Slipspace Engine to Unreal Engi…- Halobacterium uses a unique light-driven energy system that functions without chlorophyll.While most life relies on chlorophyll for photosynthesis, the archaeon Halobacterium employs a distinct mechanism. It uses a protein called bacteriorhodopsin to capture light ener…
Halocarbons are the invisible, stable building blocks of modern life and environmental concern.Halocarbons are chemical compounds where carbon bonds with halogens like chlorine or fluorine. While their remarkable stability makes them ideal for everything from life-saving me…
Halsey created a dystopian desert wasteland to escape her own real-life mental strugglesWhen Halsey released her debut album Badlands in 2015, she was not just singing pop songs. She was constructing a fictional, captive society to serve as a physical metaphor for a …
Ham and bacon were once cured in the very same barrelLong before fridges, curing pork with salt was the only way to keep it safe for months. Ham and bacon were simply different cuts treated identically, sometimes packed together. Re…
Hama, the Syrian city of water wheels, has survived millennia of conquest and upheaval.Perched on the Orontes River, Hama is one of Syria's oldest and most resilient urban centers. Famous for its iconic wooden norias and a rich culinary tradition, the city has been …
Hamadan: The Ancient Iranian Summer Capital That Survived Centuries of ConquestPerched high in the foothills of Mount Alvand, Hamadan has served as a strategic royal retreat for millennia. From its origins as a Median capital to its role as a hub for Islamic…
Hamburg has more bridges than any other European cityGermany's second city and a Free Hanseatic city-state counts over 1.9 million residents where the Alster and Bille meet the Elbe. Around 2,500 bridges cross its waters—Europe's de…
Hamburger SV: The German football giant that earned the nickname The DinosaurKnown as die Rothosen or the Dinosaur, Hamburger SV is one of Germany's oldest and most storied sports clubs. While it once stood as the only team to play every season of the Bund…
Hamed Haddadi: The Iranian Basketball Icon Who Broke Barriers Across Three ContinentsStanding 7 feet 2 inches tall, Hamed Haddadi became the first Iranian to play in the NBA. His journey spans from hometown courts in Ahvaz to championship glory in China and histor…
Hamhung: The North Korean Industrial Hub Built by East German Architects After Total DestructionOnce reduced to rubble by American air raids, Hamhung was rebuilt through a massive, clandestine reconstruction program led by East German planners. Today, this North Korean port …
Hamilton carved his breakthrough equation into a Dublin bridge with a penknifeOn 16 October 1843, walking beside Dublin's Royal Canal with his wife, William Rowan Hamilton suddenly saw how to multiply numbers in four dimensions. Afraid to lose the idea, he …
Hamilton earned a record 16 Tony nominations, yet nobody may license itLin-Manuel Miranda turned Ron Chernow's 2004 biography of a Founding Father into a musical that is sung and rapped from start to finish. Hamilton won the 2016 Pulitzer Prize for D…