Cards starting with H
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Hong Kong packed 7.5 million onto 1,114 square kilometresChina's southern special administrative region—Hong Kong Island, Kowloon, and the New Territories—holds about 7.5 million people on roughly 1,114 square kilometres. That density r…
Hong Taiji renamed his father's state and created the Qing dynastyNurhaci's eighth son inherited a Manchu kingdom called the Later Jin in 1626. Within a decade Hong Taiji had brought Han Chinese into government, conquered Inner Mongolia, forced …
Honiara: The Tropical Capital Built on the Scars of World War IISituated on the coast of Guadalcanal, Honiara is the administrative heart of the Solomon Islands. Once a battleground for American and Japanese forces, the city evolved into a mod…
Honkai: Star Rail sends a train between planets styled on real culturesA steam train running through the stars comes straight out of Kenji Miyazawa's Night on the Galactic Railroad and the manga Galaxy Express 999. miHoYo borrowed the image for Honka…
Honoré d'Urfé: The man who taught 17th-century France how to talk about loveBefore he became a literary sensation, Honoré d'Urfé was a prisoner of war who found solace in the classics. His sprawling pastoral romance, L'Astrée, transformed the French cultu…
Honoré de Balzac attempted to map the entirety of human existence through ninety novels.Balzac did not just write stories; he built a sociological machine. His massive series, La Comédie humaine, aimed to capture the totality of French society, from the aristocracy t…
Honoring a legacy of exploration 25 years after the Challenger tragedyNASA held a public remembrance service at the Kennedy Space Center to mark the quarter-century anniversary of the STS-51L mission. This broadcast captures the enduring weight of t…
Honoring John Glenn, the first American to orbit the EarthThis video commemorates the life of John Glenn, a pioneer of space exploration and a dedicated U.S. Senator. Discover how his historic flight on Friendship 7 changed the course of…
Honoring John Glenn, the first American to orbit the EarthThis video covers the public viewing held at the Ohio Statehouse for John Glenn. It commemorates the life of the former NASA astronaut and U.S. Senator, a key figure in the early …
Honoring Jose Guadalupe Posada and the iconic La Catrina at the Penn MuseumExplore the cultural significance of Día de los Muertos through a vibrant celebration at the Penn Museum. This event highlights traditional Mexican customs, featuring storytelling…
Honoring the first human in space before a journey to the starsBefore launching for the International Space Station, the Expedition 44 crew visited Star City, Russia. This video captures the crew paying respects at the Gagarin Cosmonaut Train…
Honoring the skilled workers who build and maintain our worldThis video features a live discussion celebrating National Tradesperson Day. Join general contractor Tom Silva and Jillian Shute of Stanley Black & Decker to explore the importanc…
Honoring the storytellers who revealed NASA's hidden mathematical pioneersNASA recently recognized the creators behind 'Hidden Figures' for their role in bringing history to light. This award highlights how storytelling can contribute to an agency's mis…
Honouring a pioneer: officials gather to pay respects to John GlennWitness the solemn public viewing of former astronaut and Senator John Glenn, as leaders from across the United States gather to honour the life of the first American to orbit Ear…
Honouring space legends through ancient traditions in RussiaBefore launching to the International Space Station, the Expedition 51-52 crew visited historic sites in Star City and Moscow to observe time-honored spaceflight ceremonies.
Honouring space legends: A pre-launch pilgrimage to Russia's historic sitesBefore their journey to the International Space Station, the Expedition 45 crew visited iconic landmarks in Russia to pay respects to the pioneers of space exploration.
Honouring the legacy of storm researcher Tim SamarasThis 2012 NASA tribute commemorates the life and scientific contributions of renowned storm chaser Tim Samaras, produced in connection with the GOES-R program.
Honouring the legacy of the Apollo 1 crew at Kennedy Space CenterA new tribute has opened at the Apollo/Saturn V Center to commemorate the lives of three astronauts and the lessons learned from a tragic moment in space history.
Hood County, Texas: A growing landscape shaped by water and proximity to the metroplexLocated in North Central Texas, Hood County is a region defined by its unique geography and its evolving relationship with the nearby Dallas-Fort Worth metroplex. While it retains…
Hoodoo: The Secret Spiritual Resistance That Shaped African American HistoryBorn from the trauma of the transatlantic slave trade, Hoodoo is an autonomous spiritual system blending West and Central African traditions with Indigenous and European influence…
Hookworm larvae travel through the lungs before settling in the gutA hookworm larva that bores into a bare foot takes a strange detour. It rides the bloodstream to the lungs, climbs the windpipe, gets coughed up and swallowed, and only then reach…
Hookworms infected about 428 million people in 2015, mostly through bare feetHookworm infection rarely kills, yet in 2015 it affected around 428 million people. Larvae living in contaminated soil slip through the skin of anyone walking barefoot where sanit…
Hoonah, Alaska: A Tlingit community shaped by glacial retreat and modern tourismPerched on Chichagof Island, Hoonah is a resilient Tlingit settlement that has evolved from a traditional homeland into a hub for cruise ship tourism. Once defined by the seasonal…
Hoopoes raise a crown and weaponise nest stenchAcross Africa, Asia, and Europe, hoopoes flash a raisable feather crown and probe soil for insects. Two living species and one extinct Saint Helena form are recognised; Linnaeus n…
Hootie's frontman became country's first Black No. 1 in 25 yearsIn September 2008 Darius Rucker, best known as the singer of Hootie & the Blowfish, topped the country chart with Don't Think I Don't Think About It. No solo African American arti…
Hope involves both finding pathways to goals and the agency to pursue themResearchers reviewing hope theory found that hope is more than just optimism. It is defined as a dual process: the perceived ability to identify specific pathways to reach desired…
Hopper painted the loneliness inside brightly lit dinersEdward Hopper (1882–1967) made American realism feel like held breath—gas stations, hotels, and the 1942 Nighthawks counter where strangers share light but not company. Nyack-born…
Hoppers whose name never meant "I don't know"Kangaroos are the big macropods—red, antilopine, eastern grey, and western grey—native to Australia and New Guinea. Large males can stand about two metres and weigh ninety kilogra…
Hops won the beer wars partly because the Church taxed the alternativeFor centuries European brewers flavoured beer with gruit, a mix of bitter herbs such as heather and ground ivy. Hops, the flowers of a climbing vine related to cannabis, slowly pu…
Hopscotch courts appear in English records only after 1600Hopscotch sends a marker into chalked or scratched squares, then demands hopping retrieval without touching lines. Despite Roman-soldier legends, archaeologist Ulrich Schädler fin…
Horace fought at Philippi then sang Augustus’s RomeQuintus Horatius Flaccus (65–8 BC)—Horace—wrote Odes, hexameter Satires and Epistles, and sharp Epodes across Rome’s leap from republic to empire. An officer on the losing republi…
Horace Greeley pushed "Go West" and built America's biggest newspaper from a lossIts first week, Horace Greeley's New-York Tribune took in $92 and spent $525. It sold for a penny, carried by newsboys, and in 1841 it faced a rival with more readers than all its…
Horace Lamb: The mathematician who treated algebraic analysis like a musical compositionHorace Lamb was a titan of applied mathematics whose textbooks defined the field for generations. Beyond his technical mastery of fluid dynamics and acoustics, he viewed the mathe…
Horace Mann, father of American public schools, taught his own children at homeHorace Mann persuaded Massachusetts and then most northern states to fund elementary schools through taxes and to train teachers in normal schools. Yet the reformer later called t…
Horace Walpole: The Prime Minister's Son Who Invented Gothic Fiction and Neo-Gothic ArchitectureAs the son of Britain's first prime minister, Horace Walpole lived a life of political privilege and literary innovation. He authored the first Gothic novel, built a trend-setting…
Horace’s Odes: Ancient Roman lyric poetry that still sparkles after two millenniaHorace’s Odes are a four-book collection of Latin lyric poetry that defined an era. Published between 23 and 13 BC, these verses masterfully adapted Greek forms to Roman social li…
Hormozgan: The Iranian province that became a global crossroads for empires and tradeSituated along the Strait of Hormuz, this Iranian province has served as a vital maritime gateway for centuries. From ancient Sassanid ports to colonial power struggles between th…
Hornbeam wood is so hard it earned the nickname ironwoodRun a hand over a mature hornbeam and the smooth grey trunk ripples like flexed muscle. The wood beneath is so tough that carpenters rarely bother with it for everyday work. Inste…
Hornbill mothers wall themselves into nest holesTropical Africa, Asia, and Melanesia host about sixty-two living Bucerotidae species defined by massive down-curved bills, often topped by a hollow casque. Breeding females of mos…
Horned dinosaurs carried a beak bone found in no other animalEvery ceratopsian, from tiny Psittacosaurus to Triceratops, had a toothless bone at the tip of its upper jaw called the rostral, which no other animal possesses. Paired with a mat…
Horned lizards can squirt blood from their eyesPhrynosoma—horned lizards, horny toads, or horntoads—are flat-bodied North American lizards whose 'toad' nickname reflects sluggish camouflage more than kinship. At least eight sp…
Hornfels: The tough, baked rock that rings like a bell when struckNamed for its resemblance to animal horns, hornfels is a dense, splintery rock forged by intense heat rather than pressure. These baked metamorphic stones are so durable and uniqu…
Hornworts lure bacteria into slimy chambers to farm nitrogen-fixing partnersMany hornworts grow internal cavities filled with mucilage, then release chemical signals that coax free-living cyanobacteria, especially Nostoc, to move in. The resulting colonie…
Horologium: The Southern Constellation That Immortalizes the Enlightenment's Obsession with Precision TimekeepingIn 1756, French astronomer Nicolas-Louis de Lacaille mapped the southern skies, populating them with symbols of scientific progress. Among his creations was Horologium, a faint co…
Horowitz left Soviet Russia with dollars sewn into shoesVladimir Horowitz (1903–1989), Kiev-born pianist often ranked among history’s greatest, fled via Germany in December 1925—ostensibly to study with Schnabel, secretly packing curre…
Horrorcore: When Hip-Hop Trades Urban Realism for the Macabre and SupernaturalHorrorcore is a polarizing hip-hop subgenre that swaps traditional street narratives for slasher-film imagery, occult themes, and psychological dread. While critics and law enforc…
Hors d'oeuvre literally means a dish that sits outside the workIn seventeenth-century France, dinner arrived all at once in rigid symmetry, and the little extra plates set beyond that formal arrangement earned the name hors d'oeuvre. Romans n…
Horse chestnuts, water chestnuts and Brazil nuts are not chestnuts at allOnly trees of the genus Castanea, cousins of oaks and beeches, bear true chestnuts. Horse chestnuts are mildly poisonous lookalikes, water chestnuts are sedge tubers, and Brazil n…
Horse-family fossils begin fifty-four million years agoEquidae, the horse family, holds horses, asses, zebras and many species known only as fossils. Over more than 50 million years it turned small, many-toed browsers into large anima…
Horses evolved in North America, vanished there, and returned with the conquistadorsEvery living horse, donkey and zebra belongs to one genus, Equus, which arose in North America and spread across the Old World. Then, around 12,000 years ago, horses disappeared f…
Horses were domesticated around 4000 BC, but stirrups took millennia to followStirrups are often ranked among the biggest military inventions before gunpowder, yet they came remarkably late. Riders in India used a simple loop for the big toe by the second c…
Horseshoe crabs are not crabs, and their blood helps detect bacterial contaminationDespite the name, horseshoe crabs are closer kin to spiders, ticks and scorpions than to any crab or lobster. They have barely changed in some 250 million years, and people now ha…
Horseshoe crabs are sword-tailed cousins of spidersOrder Xiphosura—Greek for sword tail—groups arthropods related to arachnids, the familiar horseshoe crabs among them. Their look barely shifted across hundreds of millions of year…
Horsetails are the last survivors of plants that once grew 30 metres tallThe humble horsetail in a damp ditch is the only living genus of a plant group that dominated late Paleozoic forest floors for over 100 million years. Some of its extinct relative…
Hosni Mubarak: The Air Force Commander Who Ruled Egypt for Three DecadesRising from a career in the Egyptian Air Force to the presidency, Hosni Mubarak dominated Egyptian politics for nearly thirty years. His tenure was defined by a complex mix of reg…
Hospice care is not just for the final days of an incurable illnessMany believe hospice is only for the dying, but it is actually a flexible style of care focused on quality of life. It provides holistic support for medical, emotional, and spirit…
Hospital knights from Acre built a Baltic crusader stateFounded around 1190 at Acre by Bremen and Lübeck merchants, the Teutonic Order began as pilgrims’ hospitalers. Invited by Konrad of Masovia against Old Prussians, they forged an i…
Hospital, hotel, hostel and host all grew from one Latin wordA hospital gathers specialized clinicians, equipment, and support staff to treat patients, and the power to admit people overnight is what sets it apart from a clinic. Yet the wor…
Hospitals have become high-risk hotspots for deadly antibiotic-resistant bacteriaWhile antibiotics save millions, their misuse accelerates bacterial evolution. This makes hospitals dangerous breeding grounds where resistant germs thrive in sinks, drains, and o…
Host genetics and specific genes influence the diversity of the human gut microbiomeResearchers who analyzed genetic data and fecal samples from 18,340 individuals across 24 different cohorts found that host genetics significantly shape the composition of the gut…
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