Cards starting with M

3,838 cards. Page 60 of 64.

3541. Most languages mark yes-no questions with a particle, not by reordering wordsEnglish turns a statement into a question by flipping words around, often recruiting do: Sam reads becomes Does Sam read? That makes English unusual. Across the world, the commone…
3542. Most lava flows about as thickly as ketchup, yet travels for kilometresMolten basalt is roughly as viscous as ketchup, tens of thousands of times thicker than water. It still travels huge distances because its surface quickly hardens into a crust tha…
3543. Most liquorice sweets get their flavour mainly from aniseed, not liquoriceThe root of Glycyrrhiza glabra holds glycyrrhizin, a compound 30 to 50 times sweeter than sugar, with a slow, lingering taste. Yet many black sweets sold as liquorice contain litt…
3544. Most marine life shifts are moving in line with climate change trendsA large-scale meta-analysis of 1,735 marine biological responses found that between 81% and 83% of observations align with the predicted impacts of a changing climate. The study t…
3545. Most metals in their pure form are rare, but some exist naturally in the wild.While we associate metals with industrial smelting, nature occasionally yields them in their pure, metallic state. From gold nuggets in riverbeds to massive copper deposits in the…
3546. Most modern dog breeds are Victorian inventions, not ancient legacies of human history.While we often imagine our favorite dog breeds as ancient companions, most are actually products of Victorian-era selective breeding. Driven by 19th-century dog shows and the form…
3547. Most moles are harmless, but your skin's history holds vital clues about cancer riskA nevus, or mole, is simply a cluster of pigment cells. While most adults carry dozens of these spots, they are rarely cancerous. However, certain atypical moles act as markers fo…
3548. Most multi-planet systems detected by Kepler are stable and lack orbital resonancesResearchers analyzing data from the Kepler space telescope found that about one-third of the initial transiting planet candidates belong to multi-planet systems. By examining 115 …
3549. Most observational studies still rely on traditional rather than causal mediation methodsA scoping review of 174 observational epidemiologic studies published between 2015 and 2019 found that the majority of researchers still use traditional mediation analysis. While …
3550. Most of a hydrogen bomb's power actually comes from fission, not fusionThe hydrogen bomb takes its name from the fusion of heavy hydrogen isotopes, yet in typical American designs more than 80 percent of the energy comes from splitting uranium in the…
3551. Most of a hydrogen bomb's power comes from cheap, ordinary uraniumThe fusion fuel in a thermonuclear weapon is not where most of its energy comes from. Fast neutrons from fusion split the outer jacket of uranium-238, a cheap leftover of enrichme…
3552. Most of a tree's trunk is actually dead tissue, complicating our history.Trees are structurally supported by xylem tissue, which is technically dead. This biological reality creates a significant challenge for archaeologists known as the old wood probl…
3553. Most of an octopus's brain is in its arms.An octopus has about 500 million neurons, and around two-thirds of them are in its eight arms, not its head. Each arm can taste, touch and make decisions on its own. An octopus do…
3554. Most of Earth's heavy metals likely originated from a single, ancient neutron star collision.While we often hear that we are made of star stuff, recent research suggests a more specific origin for our precious metals. This video explores how the collision of neutron stars…
3555. Most of Earth's volcanoes erupt unseen, on the ocean floorPicture a volcano and you probably imagine a smoking cone. In fact most volcanic activity happens underwater along mid-ocean ridges, quietly building new seafloor. The biggest kno…
3556. Most of human seminal fluid comes from glands, not the testesSperm cells make up only part of semen. About 70 percent of the human fluid comes from the seminal vesicles, a sugary secretion rich in fructose, with more added by the prostate. …
3557. Most of modern mathematics rests on a handful of rules about setsWhen paradoxes cracked the early theory of sets, mathematicians rebuilt it from a short list of axioms. The result, Zermelo-Fraenkel set theory with the axiom of choice, is now th…
3558. Most of the air through a jetliner's engine never gets burnedIn the engines on most passenger jets, the bulk of the air sucked in at the front never reaches the combustion chamber. It is pushed around the hot core by a big ducted fan. With …
3559. Most of the energy you burn each day goes on simply staying aliveLying still, awake and unfed, the human body still spends roughly seven tenths of its daily calories just running itself: breathing, pumping blood, holding its temperature, firing…
3560. Most of the money in your pocket does not actually exist as physical cash.In modern economies, physical banknotes and coins are a tiny fraction of the total money supply. The vast majority of money is actually digital, created by commercial banks whenev…
3561. Most of the world's critically endangered species are plants, not animalsAs of March 2026, the IUCN Red List classed 10,774 species as critically endangered, about 6.2% of everything it assesses. Plants make up 6,445 of them, nearly 60%, far outnumberi…
3562. Most of the world's estuaries are younger than farmingWhen the last ice age ended and seas began climbing roughly 10,000 to 12,000 years ago, oceans flooded valleys carved by rivers and glaciers. Those drowned valleys became today's …
3563. Most of the world's nations do not have their own sovereign stateWhile we often equate a nation with a country, the reality is far more complex. Most of the world's thousands of nations lack independent statehood, existing instead as stateless …
3564. Most of Uluru’s sandstone bulk hides undergroundNear Australia’s centre, a sandstone monolith rises 348 metres yet keeps most of its mass buried. Sacred to Pitjantjatjara Aṉangu, dual-named Uluru / Ayers Rock, it flushes red at…
3565. Most of what people 'know' about Prithviraj Chauhan comes from legendPrithviraj Chauhan ranks among India's most celebrated medieval kings, yet solid facts about him are scarce. Only a few inscriptions survive from his reign, and none were issued b…
3566. Most of your body mass does not actually come from the Higgs bosonWhile the Higgs mechanism explains the mass of fundamental particles like electrons, it accounts for only a tiny fraction of the mass in your body. This video explains how the vas…
3567. Most of your meal is absorbed in a three-part tubeThe small intestine sits between stomach and colon, taking bile and pancreatic juice while absorbing most nutrients. Duodenum, jejunum, and ileum divide the labor along a living l…
3568. Most orchid flowers twist upside down as they open, and for good reasonAs a typical orchid bud develops, it rotates a full 180 degrees, a move called resupination. The result puts the showy lip petal beneath the flower's central column, where it can …
3569. Most people alive today carry a little Neanderthal in their DNAFor decades the textbook story said modern humans left Africa and simply replaced the Neanderthals. Then, on 7 May 2010, a draft Neanderthal genome showed that the two had interbr…
3570. Most people carry a minor birth anomaly without ever knowing itA curved little finger, a tiny pit near the ear, a dimple at the base of the spine: careful examination finds at least one minor anomaly in many, perhaps most, people. Birth defec…
3571. Most people carrying this intestinal parasite never know they are infected at allAmoebiasis is a widespread gastrointestinal infection caused by the parasite Entamoeba histolytica. While it can trigger severe dysentery or liver abscesses, over 90% of those inf…
3572. Most people catch the kissing disease as children and never noticeNearly 95 percent of adults have been infected with the Epstein-Barr virus, the usual cause of glandular fever. Catch it as a small child and you may barely feel it. Catch it as a…
3573. Most people live in the temperate zone, yet temperate covers wildly different weatherTemperate sounds mild, but the label stretches from the humid summers of southern China to the chilly, wind-blown Faroe Islands. Officially it covers the latitudes between the tro…
3574. Most people use mutual funds for retirement without understanding how they actually work.Mutual funds are a fundamental tool for retirement savings, yet they remain widely misunderstood. This video breaks down the basics of what these funds are, helping you make more …
3575. Most people who migrate never leave their own countryMigration conjures images of border crossings, but the dominant form worldwide is internal: people moving from village to city, or out to the suburbs, within a single nation. Glob…
3576. Most people who speak English learned it as a second languageEnglish began in early medieval England, yet the typical English speaker today is not a native. Of somewhere between 1.5 and 2 billion Anglophones, roughly 400 million grew up wit…
3577. Most people with a phobia actually live with severalA phobia is an anxiety disorder: irrational, persistent, excessive fear lasting over six months, with avoidance far beyond real danger. About three in four sufferers have multiple…
3578. Most potter's wheels spin counterclockwise, except in Japan, and there may be an ancient reasonWalk into almost any pottery studio and the wheel turns counterclockwise, with the right hand shaping the outside of the pot. Japanese potters traditionally do the reverse. One th…
3579. Most prisms are used to flip images, not to make rainbowsSplitting white light into a rainbow is the most famous thing a prism does, but it is not what prisms are mostly used for. Inside binoculars and single-lens reflex cameras, prisms…
3580. Most prostate tumors never threaten a man's lifeAbout 1.2 million prostate cancer cases and 350,000 deaths occur each year, yet most diagnosed men have low-risk disease confined to the gland—and roughly 99 percent of them live …
3581. Most quit attempts fail alone; meds and counseling helpNicotine dependence makes stopping smoking hard, yet quitting halves heart-attack risk after one year and halves lung-cancer risk after ten. From 2001 to 2010, about 70 percent of…
3582. Most real numbers are impossible to compute, even with an infinite amount of time.In mathematics, computable numbers are real numbers that can be approximated to any desired precision by a finite algorithm. While they include familiar constants, they represent …
3583. Most reef corals farm algae for food inside their cellsCorals are colonial anthozoan cnidarians whose polyps build shared limestone homes. Though tentacles can sting plankton and tiny fish, most shallow species draw the bulk of their …
3584. Most sand on the world's continental shelves was dumped there during the last ice ageThe shallow seabed fringing the continents is really drowned land. Around 60 to 70 percent of its sediment was laid down during the last ice age, when sea level stood 100 to 120 m…
3585. Most scholars doubt the Exodus happened as the Bible tells itExodus gives Israel its founding story: slavery in Egypt, ten plagues, the parted sea and the covenant at Sinai. The scholar Carol Meyers calls it arguably the Bible's most import…
3586. Most scholars stopped using the word cult back in the 1970sThe word cult once simply meant worship, as in the imperial cult of ancient Rome. Today it is an accusation. By the late 1970s most academics had swapped it for new religious move…
3587. Most sink clogs are not sudden accidents but slow, preventable accumulations of debris.Plumbing expert Richard Trethewey demonstrates how common household waste builds up in pipes over time. Learn the simple habits and maintenance routines to keep your drains clear …
3588. Most skin cancers ride ultraviolet light into DNAAmong cancers that doctors identify in people, skin tumours top the list worldwide, and more than 90 percent of cases link to ultraviolet radiation from the sun or tanning devices…
3589. Most so-called sinus headaches may actually be migraines in disguiseA throbbing face and forehead feels like a blocked sinus, yet a 2005 review concluded that most sinus headaches are really migraines. The same trigeminal nerve serves both the sin…
3590. Most societies that allow plural marriage prefer polygynyPolygamy means being married to more than one spouse at once. A man with several wives practises polygyny, and a woman with several husbands practises polyandry. Societies various…
3591. Most solar-type stars are single rather than part of multiple star systemsResearchers who surveyed 454 solar-type stars found that the majority of these stars are single. By combining data from various catalogs and using advanced interferometry, the stu…
3592. Most solid tumours take ten to forty years after the first hitCarcinogens—chemicals, radiation, viruses, bacteria—nudge cells toward cancer, usually by mutating DNA. For many solid tumours the lag between exposure and disease stretches a dec…
3593. Most Spaniards say they never take a siesta at allThe siesta is Spain's most famous habit, yet in a 2009 survey 58.6% of Spaniards said they never nap, and only 16.2% said they did so daily. Spanish workers are not slacking eithe…
3594. Most stars in our galaxy are not solitary like our SunOur solar system feels familiar because we orbit a single Sun, but this is the exception rather than the rule. In the vastness of the galaxy, more than half of all stars possess o…
3595. Most stars swell into giants when their core hydrogen runs outA giant star is not simply a big star. It is one that has used up the hydrogen in its core and puffed up, becoming far larger and brighter than a normal star of the same colour. T…
3596. Most stingers reuse; honeybees bet the farm on one jabA stinger is a sharp organ, usually on arthropods, that pierces skin to inject venom—though not every sting carries poison. Bites and stings get confused in first aid. Of some twe…
3597. Most strokes starve the brain, not flood itAbout eighty-seven percent of strokes are ischemic: a clot or blockage cuts blood to brain tissue. The rest are hemorrhagic, from bleeding into or around the brain. High blood pre…
3598. Most US Presidents served in the military, but few experienced actual combat.While 31 of the 45 men who have served as President of the United States held roles in the armed forces, the majority never faced the heat of battle. This video examines the milit…
3599. Most vertebrates ride on red cells—except icefish in icy seasRed blood cells, or erythrocytes, are the commonest blood cells and vertebrates’ main oxygen delivery vans. Human adults make about 2.4 million per second; each mature disk holds …
3600. Most Vodou practitioners in Haiti also consider themselves CatholicHaitian Vodou is often called one of the most misunderstood religions on Earth. It has one remote creator god and more than a thousand spirits, no pope, no creed and no fixed litu…