Intellect PlusCards starting with C
9,109 cards. Page 114 of 152.
Ceiling fans do not cool the air, they cool you through clever physicsContrary to popular belief, ceiling fans are not air conditioners. They do not lower room temperature or humidity. Instead, they create a wind chill effect that accelerates sweat …
Cel animation built films one hand-drawn frame at a timeBefore computers dominated studios, classical animation meant drawing every frame by hand, then transferring art to transparent cels painted on the reverse and photographed over b…
Celâl Bayar: The Turkish Statesman Who Lived Through a Century of Radical Political ChangeFrom a young revolutionary in the Ottoman Empire to the first civilian president of the Turkish Republic, Celâl Bayar’s life spanned 103 years. He helped build Turkey’s financial …
Celebrate half a million subscribers with free gardening resources and a global contest.Huw Richards marks reaching 500,000 subscribers by sharing free gardening resources and launching an international contest. This video serves as a guide for winter planning and in…
Celebrate RHS Garden Day by crafting a traditional dried flower crown at homeLearn how to assemble a floral crown using dried British flowers and grasses. This guide explains the classic floristry methods needed to mark RHS Garden Day with a handmade acces…
Celebrating 35 years of the telescope that rewrote our cosmic textbooksTo mark its 35th anniversary in orbit, NASA and ESA have released stunning new images. This video showcases Hubble's latest discoveries, from the surface of Mars to spectacular st…
Celebrating a Century of Aerospace Innovation Since the Founding of the NACAThis address marks the hundredth anniversary of the National Advisory Committee for Aeronautics. It highlights a 2015 symposium held by the Smithsonian and NASA to reflect on a ce…
Celebrating a Century of Aerospace Innovation Since the Founding of the NACAThis video commemorates the 100th anniversary of the National Advisory Committee for Aeronautics, the precursor to NASA. It highlights the committee's foundational role in advanci…
Celebrating a decade of continuous human presence in orbitAs the International Space Station Program marks ten years of uninterrupted human habitation, NASA administrators and former crewmembers reflect on the station's legacy and what l…
Celebrating a horticultural legacy: Jane's remarkable 38-year tenure on Gardening AustraliaThe Gardening Australia team honors Jane as she concludes her 38-year journey on the program. This retrospective highlights her significant contribution to the show, which serves …
Celebrating Nelson Mandela's legacy through 67 minutes of global serviceOn July 18, 2010, the British Museum hosted a special event honoring Nelson Mandela and South African culture. This gathering invited visitors to commit 67 minutes of charitable s…
Celebrating Nine Decades of Partnership Through a Specially Designed Horticultural TributeThis video showcases a garden created to mark the 90th anniversary of Guide Dogs. It highlights how the Royal Horticultural Society uses the art and practice of gardening to inspi…
Celebrating the Asian American and Pacific Islander professionals driving NASA's scientific discoveryDuring AAPI Heritage Month, NASA highlights the diverse workforce behind its mission. This video features stories from employees across various centers, showcasing the resilience …
Celebrating the most talented DIY enthusiasts in the home improvement communityThis video showcases the 2019 Tommy Awards, where Tommy Silva highlights exceptional home renovation projects. Discover which creative DIYers earned recognition and a chance at a …- Celebrating the women who shaped the future of space explorationOn March 28, NASA joined a Women’s History Month event at the Smithsonian National Air and Space Museum to highlight the vital role of women in STEM.
Celebrating three million subscribers with a look at the iconic Toyota CorollaTo mark reaching three million subscribers, this video takes a lighthearted detour from regular programming to explore the history and impact of the Toyota Corolla. It is a person…
Celebrating Two Million Curious Minds with a Special Q&A SessionHost Joe Hanson, Ph.D., marks a significant milestone for the It's Okay To Be Smart channel. This episode features a dedicated question-and-answer session to celebrate reaching tw…
Celery was once a winter remedy against scurvy and an Egyptian funeral garlandBefore it became a diet snack, celery decorated ancient Egyptian funeral garlands and was grown as a cold-season cleanser for people living on salted meat. Its name appears in Lin…
Celestial companions can share an orbit, dancing in a stable 1:1 gravitational resonance.Objects in a co-orbital configuration share the same distance from their primary, locked in a 1:1 mean-motion resonance. From trojans trailing 60 degrees behind to moons swapping …
Celestial highlights for September 2026 include peak Venus and a lunar-planetary alignmentNASA provides a guide to the night sky for September 2026, featuring planetary sightings, the shifting seasons, and a global celebration of our moon. This overview helps observers…- Celestial hitchhikers: how small bodies share orbits with planets and moonsTrojans are small celestial bodies that share the orbit of a larger object, tethered to stable gravitational pockets known as Lagrange points. While Jupiter is famous for hosting …
Celine Dion's global tour redefined the scale of modern stadium performance in the late 2000sFollowing a five-year residency in Las Vegas, Celine Dion returned to the road with a massive, technically complex production. The Taking Chances World Tour spanned continents, gr…
Celine Dion's high-stakes return to the stage in ParisAfter a long hiatus caused by health issues and the cancellation of her Courage World Tour, Celine Dion is returning to live performance. Her 2026–2027 residency at the Plenitude …
Celine Dion's manager mortgaged his house to record a twelve-year-old from QuebecThe youngest of fourteen children, Celine Dion slept in a drawer as a baby because the family could not spare money for a crib. At twelve she sent a homemade song to a manager, wh…
Cells are not just bags of soup, they are complex, organized, liquid-like droplets.Inside your cells, components do not just float randomly. They undergo phase separation, demixing into distinct, functional droplets called biomolecular condensates. This process …
Cells carry an internal scaffold that builds and dismantles itself constantlyEarly biologists dismissed the cytoskeleton as dull jelly holding organelles in place. It turned out to be a restless network of protein cables and tubes that shapes the cell, hau…
Cells constantly swallow their own surface to bring in essential nutrients and moleculesEndocytosis is the vital process by which cells internalize extracellular material by budding off sections of their own membrane. From engulfing large particles to selectively imp…- Cells sense and respond to the stiffness of their surrounding environmentResearchers studying rat kidney and fibroblast cells found that the flexibility of a cell's surface significantly alters how it moves and attaches. When grown on flexible substrat…
Cells sometimes misread their own genetic code on purposeTranslation turns a string of RNA letters into a protein, reading three letters per amino acid. Accuracy depends on enzymes that load each carrier molecule with the right amino ac…
Cells taken from one woman in 1951 are still dividing in labs worldwide.In 1951 doctors in Baltimore took a sample of Henrietta Lacks's cervical tumour without asking her. Her cells did something no human cells had done before: they kept dividing in t…- Cells use a targeted process to clear out worn mitochondriaA review of research on mitophagy, the process cells use to selectively break down mitochondria, describes how outer membrane receptors and ubiquitin tags mark worn-out or excess …
Cells were named for monks' rooms, and one bacterium is visible unaidedWhen Robert Hooke peered through a microscope in 1665, the tiny compartments he saw reminded him of monks' rooms in a monastery, so he called them cells, from the Latin for small …- Cellular chaperone proteins guide folding and prevent toxic clumpsA review of research on protein quality control explains how molecular chaperones, found in every domain of life, catch new protein chains as they leave the ribosome and steer the…
Cellular entry pathways shift as particles grow from tiny to largeResearchers who studied non-phagocytic B16 cells found that the size of a particle determines how it enters a cell. By tracking fluorescent beads ranging from 50 to 1,000 nm in di…
Cellulitis is a serious skin infection that requires prompt medical attention to prevent complications.Cellulitis is a bacterial infection of the deeper skin layers that can turn life-threatening if ignored. While often appearing as red, swollen, and painful skin, it requires immed…
Cellulose's complex relationship with water drives innovations in composites and filtrationResearchers reviewing the properties of cellulose found that while the material is insoluble in water, its complex hydrogen bond networks allow for unique interactions. These inte…- Celsus named four fiery signs of acute inflammationInflammation is tissue defence triggered by trauma, infection, toxins, and more—an innate, not adaptive, immune pattern involving cells, vessels, and mediators. Acute bursts recru…
Celtic Mediolanum still runs Italy’s fashion ledgerMilan, Lombardy’s capital, is Italy’s second city and a global node of industry, finance, and fashion. Celts founded it around 590 BC; Rome took it in 222 BC as Mediolanum, and fr…
Celtic named a language family, not one ancient nationGreek writers first recorded Keltoi near Marseille in 517 BC. Today Celtic usually means Ireland, Scotland, Wales, Cornwall, Mann, and Brittany—where related tongues survive—while…
Celtic's European Cup winners in 1967 were all born near GlasgowOn 25 May 1967 in Lisbon, Celtic beat Inter Milan 2–1 to become the first British club to win the European Cup. Every player in the side had been born within 30 miles of Glasgow. …
Cementite is the brittle, iron-rich ceramic that gives steel its essential structural strengthSteel is rarely just iron. It is a complex composite, and cementite is the secret ingredient that binds it together. This iron carbide compound is incredibly hard and brittle, act…
Cenk Uygur: The populist media mogul who challenged the U.S. Constitution for the presidencyCenk Uygur built a global digital media empire on progressive populism, yet his career is defined by contradictions. From his early days as a conservative to his current role as a…
Cenotes are more than just swimming holes; they are portals to ancient history and ecosystems.These natural limestone sinkholes, found in abundance across Mexico's Yucatán Peninsula, serve as vital freshwater sources and gateways to vast, hidden underwater cave systems. Be…
Census South is a culture region slavery’s economy remadeThe Southern United States—Dixie, the Southland—is one of four U.S. Census Bureau regions between the Atlantic and the West, touching Midwest and Northeast. Scholars often redraw …
Centaurs are cosmic drifters caught between the icy Kuiper belt and the giant planets.Named for the mythological hybrids, Centaurs are small, unstable bodies that blur the line between asteroids and comets. They originate in the distant Kuiper belt but are nudged i…- Centaurus A shoots radio jets longer than a million light-yearsAt the heart of Centaurus A sits a black hole of 55 million suns, firing a jet whose inner portion races at roughly half light speed. The radio glow from that outflow stretches pa…
Centipedes rarely have one hundred legs, despite what their name suggests.The name centipede implies a specific count, but reality is far more varied. Natural History Museum scientist Greg Edgecombe clarifies the actual range of legs found on these crea…
Central Africa is a label that moves with each institutionCentral Africa has no single agreed map. The UN's Middle Africa counts nine countries from Chad to Angola, the African Development Bank lists seven, and the 1953–1963 Central Afri…
Central America is a narrow, volcanic bridge defined by deep cultural and geographic divides.Spanning seven nations, Central America is a complex isthmus where tropical rainforests meet rugged volcanic peaks. While often viewed as a singular region, it is a mosaic of dive…- Central America’s biggest lake still hosts bull sharksLake Nicaragua—Cocibolca or Mar Dulce to locals—covers 8,264 square kilometres, the largest freshwater lake in Central America. Freshwater sharks, sawfish, and tarpon share a tect…
Central America’s least crowded country guards a coral corridorBelize, on Central America's northeastern coast between Mexico, Guatemala and the Caribbean, is the region's least populated country, with 397,483 people on 22,970 square kilometr…
Central America’s smallest coast still wears a “Holy Saviour” nameEl Salvador hugs the Pacific between Guatemala and Honduras, centered on capital San Salvador. Olmec, Maya, and Cuzcatlec layers preceded Pedro de Alvarado’s 1524 conquest; indepe…
Central Asia's largest city rebuilt after Genghis KhanTashkent, Uzbekistan's capital also called Toshkent, held more than 3.1 million people as of 1 July 2025—the most populous city in Central Asia. Sogdian and Turkic cultures prevai…
Central Florida is a shifting, high-growth region defined more by industry than official borders.Central Florida is a dynamic, rapidly expanding region that defies rigid mapping. While often synonymous with the Orlando metropolitan area, its identity is a fluid blend of touri…
Central Java is a volcanic landscape defined by ancient kingdoms and modern industry.Spanning from the Indian Ocean to the Java Sea, Central Java is a province of dramatic volcanic peaks and deep historical roots. Home to the legendary Borobudur monument and a bus…- Central Kalimantan: The vast Indonesian province born from a quest for cultural autonomyAs Indonesia's largest province by land area, Central Kalimantan is a sprawling landscape of peat swamps and tropical forests. Established in 1957 to grant the indigenous Dayak pe…
Central Luzon: The Philippines' Rice Granary and a Crucible of HistoryKnown as the Rice Granary of the Philippines, Central Luzon is more than just the nation's agricultural heart. It is a region defined by shifting borders, colonial legacies, and a…
Central Papua is a rugged, mineral-rich province home to the world's highest island peak.Established in 2022, Central Papua is a newly formed Indonesian province on the western half of New Guinea. It spans from the Sudirman Mountains to the coast, housing both immense…
Central Plains province outranks Turkey in economic scaleHenan—"south of the river"—is China's third-most populous province and the largest inland, with over 99 million people in 2020 across the historic Central Plains core of Chinese c…
Central Sulawesi hides ancient secrets and rugged volcanic peaks within its sprawling tropical landscape.Spanning the heart of Celebes island, Central Sulawesi is a land of dramatic contrasts. From towering volcanic cones and deep, mysterious lakes to ancient megaliths dating back th…