Intellect PlusCards starting with S
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Scoping review maps how affordable wearables are used in health researchA scoping review of 179 studies covering more than 10 million participants examined how researchers have used affordable, consumer-grade wearable devices—mostly fitness trackers a…
Scopolamine: From Ancient Nightshade Rituals to Modern Surgical Anesthesia and Criminal MisuseKnown as Devil's Breath, scopolamine is a potent muscarinic antagonist derived from nightshade plants. While it serves as a vital medical tool for preventing motion sickness and m…
Scorpions have hunted with pincers and sting for 430 million yearsScorpions are predatory arachnids with eight legs, grasping pincers, and a segmented tail that curves forward to a stinger. Their lineage reaches the Silurian, about four hundred …
Scorsese took 26 years to get his Jesus film onto the screenMartin Scorsese was handed Nikos Kazantzakis's novel as a student in 1962, finally read it a decade later, and saw Paramount scrap his first attempt in 1983 amid budget worries an…
Scorsese wanted Goodfellas to feel like a two-and-a-half-hour trailerWhen Martin Scorsese cold-called Nicholas Pileggi to say he had waited his whole life for the reporter's mob book, Pileggi answered that he had waited his whole life for that call…
Scotland abolished illegitimacy as a legal status only in 2006For centuries a child born to unmarried parents could be barred from inheriting land, from priesthood and from a parent's nationality. Most of those barriers have fallen within li…
Scotland and England share the title of the world's oldest national football team.From the first international match in 1872 to the modern Tartan Army, Scotland’s football history is defined by fierce rivalries and a persistent struggle to advance beyond the gr…
Scotland's deepest loch hides a secret history of Jacobite rebels and clandestine chapelsLoch Morar is the deepest freshwater body in the British Isles, plunging 310 metres into the earth. Beyond its glacial origins and legendary monster, Mòrag, the loch served as a v…
Scotland's historic counties were once judicial territories, not just lines on a map.Before they were administrative units, Scotland's shires were judicial tools of the crown. Established in the Middle Ages to extend royal authority, these territories evolved thro…
Scotland's largest airport by land area is a hub for history and controversyGlasgow Prestwick Airport is a site of strange contradictions. It is a vital transatlantic refueling stop and a former search-and-rescue powerhouse, yet it has struggled for decad…
Scotland's massive police merger created a geographic giant with hidden frictionIn 2013, Scotland consolidated eight regional police forces into a single national service. While the move aimed to provide equal access to specialist expertise like firearms and …
Scotland's oldest university was chartered by a pope most of Europe rejectedSt Andrews became a university on 28 August 1413 through papal bulls from Benedict XIII, the Avignon claimant during the Great Schism whom history now counts as an antipope. Its f…
Scotland's Pentland Firth might generate 10 gigawatts from tides aloneWater squeezed through a narrow strait moves with enormous force, and unlike wind or waves, tides arrive on a predictable schedule. Estimates suggest turbines in Scotland's Pentla…
Scotland's unicameral legislature operates from a unique building designed to encourage consensus and compromise.The Scottish Parliament, a devolved body based in Edinburgh, functions as a single-chamber legislature. Since its reconvening in 1999, it has navigated complex constitutional shif…
Scotland’s 15th-century game standardized eighteen holes in 1764Golfers use clubs to knock a ball into a series of holes in as few strokes as possible. The modern game arose in fifteenth-century Scotland; the Old Course at St Andrews fixed the…
Scotland’s literary history is a multilingual tapestry woven across sixteen centuries of shifting power.Far from a single tradition, Scottish literature emerged from a collision of Brythonic, Gaelic, Latin, French, and Scots. From the sixth-century elegies of the Gododdin to the glo…
Scott Kelly and Mikhail Kornienko are spending one full year aboard the space station.NASA flight engineer Scott Kelly discusses his ongoing year-long mission aboard the International Space Station. This session highlights the biomedical research being conducted in…
Scott Kelly and Mikhail Kornienko prepare for a record-breaking year in spaceNASA and international partners gathered in Paris to detail an upcoming year-long expedition aboard the International Space Station. This mission, featuring astronaut Scott Kelly …
Scottie Scheffler learned golf curving ping-pong balls between rooms at homeGiven plastic clubs at three, Scottie Scheffler practised by bending ping-pong balls from one room of the family home into the next. His father shovelled snow off a New Jersey dri…
Scottish English is not just one language, but a complex, evolving linguistic spectrum.Many assume Scottish speech is simply English with a thick accent, but the reality is far richer. Scotland is home to a vibrant continuum ranging from formal Scottish Standard Eng…
Scottish ice stones from 1511 still explain curling's sweep scienceCurling sends granite stones toward a four-ring house on ice, with two teams of four alternating throws. A 1511-dated stone from drained Dunblane ponds anchors early Scottish play…
Scottish universities once gave students a holiday to fetch more oatsOats cope with cold, damp weather far better than wheat, so they became Scotland's staple grain. The country's ancient universities even kept Meal Monday, a break for students to …
Scottish whisky once hid under church altars and inside coffinsAfter the Acts of Union and a hated malt tax of 1725, Scotland's distillers went underground. They stashed casks beneath altars and in coffins to dodge the excisemen, and ran thei…
Scouting began as a week-long experiment with 21 boys on an English islandIn August 1907 a retired general took 21 boys of mixed social backgrounds to Brownsea Island in Dorset to test some ideas. Within two years 11,000 uniformed Scouts packed a rally …
Scramjets, the engines that burn fuel in air rushing faster than soundA scramjet has no fans, no turbine and no moving parts at all. It relies on sheer speed to squeeze incoming air, then burns fuel in a stream still moving at supersonic pace. The c…
Scrapbooking is more than just a book of photosWhile most people associate scrapbooking with organized photo albums, the medium actually spans a wide spectrum of physical formats. From industrial-strength post-bound albums to …
Scratch it, drip acid on it, even lick it: how geologists identify mineralsA geologist's toolkit is surprisingly hands-on. Rubbing a mineral across unglazed porcelain leaves a coloured streak that betrays its identity. A drop of hydrochloric acid makes s…- Scratch tests, polarised light and X-rays: how mineralogists tell crystals apartA mineralogist's first tools are almost childlike: scratch one stone against another, check its colour and shine, see how it breaks. The advanced ones fire X-rays through powdered…
Scratches on an ancient tooth hint that Homo habilis was right-handedThe teeth of one Homo habilis fossil, OH 65, carry scratches slanting to the right. One explanation: the individual gripped meat in its teeth and left hand while slicing with a st…
Screamo is a chaotic, hardcore-rooted subgenre that often rejects its own popular nameEmerging in the early 1990s, screamo is a dissonant, emotionally charged offshoot of hardcore punk. While often confused with any music featuring screaming, the genre is defined b…
Scriabin wrote his first great sonata as a cry against GodTold by a doctor that his damaged right hand would never recover, the young pianist Alexander Scriabin poured his fury into a piano sonata he called a cry against God and fate. Th…
Scripts across Southeast Asia, including Khmer, trace back to a South Indian dynastyThe Pallavas, rulers of southern India from 275 to 897, built the Shore Temple at Mamallapuram and made Kanchipuram their capital. They also developed a script that became the anc…
Scrubbers: The Industrial Machines That Clean Our Air by Moving Pollution ElsewhereIndustrial scrubbers are essential tools for removing toxic gases and particulates from exhaust streams. While they prevent harmful substances from entering the atmosphere, they d…
Sculling means two oars; sweeping means one shared gripRowing—called crew in the United States—races boats with oars locked in rowlocks, unlike free paddles. Scullers hold two oars; sweep rowers share one oar with both hands. Elite ch…
Sculpting a miniature king: the art of the fondant lionTransforming simple sugar paste into a jungle centerpiece requires more than just steady hands. By mastering specific shaping techniques and using water as a structural adhesive, …
Sculpting a sea creature: how to craft a fondant octopus for your next cakeTransforming simple sugar paste into a marine life centerpiece requires more than just color. By mastering a few specific shaping techniques and using water as a structural adhesi…
Sculpting a seaside masterpiece with nothing but white fondant and cornstarchTransforming a simple ball of sugar into a textured, lifelike seagull requires more than just steady hands. By mastering specific pinching techniques and using simple kitchen tool…
Scythian self-name Skuδa simply meant archersEastern Iranic horse nomads rode from Central Asia onto the Pontic steppe between the ninth and eighth centuries BC. Their endonym, from a root meaning shoot or throw, labeled the…
Scythian warriors were allowed only three blood brothers at a timeSwearing brotherhood by mixing blood turns up almost everywhere: Viking sagas, Scythian wine cups, Philippine treaty rites, Mongol steppe alliances and Balkan rebel bands. The Scy…
Sea caves are not just holes in cliffs; they are dynamic, living marine ecosystems.Sea caves are more than simple geological voids. These rare, submerged environments act as vital refuges for specialized marine life, from rare algae to deep-water corals. Shaped …
Sea cows share an Eocene cousinship with elephantsSirenia—dugongs and manatees—are fully aquatic herbivores of warm coasts and rivers, cousins of elephants and hyraxes within Paenungulata. Evolving about fifty million years ago, …
Sea cucumbers recycle the seafloor with sausage-shaped bodiesSea cucumbers are echinoderms of class Holothuroidea—about seventeen hundred eighty-six known species, densest in the Asia–Pacific region. Benthic worldwide, they act as detritivo…
Sea ice is riddled with salty brine channels that host whole food websFrozen seawater covers about 7 percent of Earth's surface, yet it is far from solid. It is a mix of ice, trapped brine, air bubbles and salt, and those brine channels shelter micr…
Sea lettuce is a global superfood that can turn deadly in the wrong handsFound on rocky shores worldwide, sea lettuce is a nutrient-dense green alga enjoyed in salads and soups. While it is a staple in many coastal diets, this simple organism can accum…
Sea level is lumpy: the true shape of Earth dips and bulges by 110 metresImagine the oceans at rest, free of currents and winds, extended under the continents. That surface, the geoid, is not a smooth ellipsoid. It rises and falls by up to about 110 me…
Sea lions can walk on all fours, and true seals cannotLook for the ears. Sea lions and fur seals have small visible ear flaps, and they can swing their hind flippers forward to walk on land. Males can outweigh females sixfold, making…
Sea lions dive deep by letting their lungs collapse on purposeAs a sea lion descends, water pressure squashes the tiny air sacs of its lungs, pushing air into stiff airways where it cannot dissolve into the blood. That sounds dangerous, but …- Sea otters wear densest fur and smash shells with toolsThe sea otter (Enhydra lutris) is a North Pacific coastal mammal. Adults weigh fourteen to forty-five kilograms—heaviest of the weasel family yet among the smallest marine mammals…
Sea ravens dive with all four toes webbed togetherRoughly forty species of cormorants and shags fill family Phalacrocoracidae, weighing from about a third of a kilogram up to five kilograms with wings often spanning sixty to one …
Sea scorpions grew to 2.5 metres and many never lived in the seaEurypterids, nicknamed sea scorpions, include the largest arthropods that ever lived: Jaekelopterus reached 2.5 metres. Yet the nickname misleads twice over. Only the earliest spe…
Sea slugs are not a single species but a diverse collection of shell-less snailsOften mistaken for simple creatures, sea slugs are a fascinating, varied group of marine gastropods. From solar-powered slugs that photosynthesize to those that weaponize the stin…
Sea snails are not a single species but a diverse group of marine mollusks.Sea snails are far more than just shells on a beach. These marine gastropods inhabit environments from shallow intertidal zones to the deepest ocean floors. While they share a com…
Sea spiders are not spiders, but bizarre marine arthropods with organs inside their legs.With bodies so small they cannot house their own digestive and reproductive systems, sea spiders have evolved to store these organs within their long, stilt-like legs. Despite the…
Sea squirt larvae swim like tadpoles, then glue themselves down for lifeA young sea squirt has a muscular tail, a nerve cord and a notochord, the hallmarks that link it to animals with backbones. Within a day or so it presses its head to a rock, secre…
Sea turtles carry a microscopic world on their backsAncient myths depicted the world resting on a giant turtle's shell. While not quite literal, modern marine biology reveals that loggerhead sea turtles do host an entire ecosystem …
Sea urchins crawl on tube feet beneath a spiny globeSea urchins are class Echinoidea within the echinoderms—about nine hundred fifty seabed species from intertidal rocks to the deep ocean. Typically three to ten centimetres across,…
Sea urchins undergo a radical transformation to survive their journey from ocean to shoreSea urchin larvae begin life as microscopic, spaceship-shaped drifters in the open ocean. After navigating a perilous odyssey, these creatures undergo a dramatic metamorphosis, ef…
Sea-level changes have shaped human migration and coastal settlement patterns for millenniaA review of geological and archaeological data in the Mediterranean Basin found that sea-level fluctuations have profoundly influenced human history. By examining the region from …
Seabirds converge on ocean life yet nest in vast coloniesSeabirds are birds adapted to marine life, often showing convergent evolution as similar ocean niches reshape unrelated lineages. They typically live longer, breed later, and rais…
Seagrasses are flowering land plants that returned to the ocean millions of years agoSeagrasses are not seaweed, but true flowering plants that evolved from terrestrial ancestors to live fully submerged in shallow coastal waters. Found on every continent except An…