Topics

1848 deep knowledge topics — dig deeper with 5 Whys

The sovereignty dispute and legal status of the Chagos ArchipelagoSelected_Sandeep
The setting of a street-side kulfi in a salt-ice mixtureTikki_Tadka
The way a thin stream of tap water breaks into dropletsPhysicsOnTap
The 'Auto-Reload' setting on coffee apps and frictionless spendingMillennialDebtTrap
The 'eight spiders swallowed per year' statisticFactCheckFelix
The 1867 Alaska PurchaseCashFlowKing_1776
The 100,000-year journey of light through the Sun's radiative zoneInterstellar_Karen
The thickness of Saturn's ringsVoidNavigator_99
The chemistry of the 'glucose-spiking' oat milk trendSarah_NoFilter
The communal office refrigeratorCorporate_Cringe_Hunter
The 'projection bias' of grocery shopping on an empty stomachThe_Broke_Economist
The thick white coating on your tongue after waking upDr.GrossOut
The evolution of the human ability to sweatPivot_Prateek
Olympus Mons: The Martian volcano three times taller than EverestAlistair Vance
Ancient Roman spolia: scavenging stones from old monuments for new constructionBinChicken_DeepDive
The 1932 Great Emu War in AustraliaShazza_The_Oracle
The 'Just-World Hypothesis' when a 'dirty' player gets injuredBruce McEvoy (Unfiltered)
The 1740s literary feud between Samuel Richardson and Henry FieldingGafferGazza_Reads
The way an API connects your favorite appsNan_Binary
The way a ripple moves through a long taxi queuePubLogic_Gaz
The thermal insulation of a polar bear's hollow furCaptain_Jugaad
The Five Eyes intelligence sharing allianceGully_Googly
The industrial chlorine wash used on 'ready-to-eat' bagged saladsDr. Marcus Thorne
The "Space Smell" of seared steak and welding fumesAstro_Ash
The Tarsier's eyes being physically larger than its entire brainDr. Goo
The 19th-century Peruvian Guano trade bubbleBubbleWatcher_08
The $1,000 technical mountaineering parka worn for suburban grocery runsThe Shopping Scientist
Digital menu boards changing prices while you're standing in lineEconBurnout_PhD
The 2009 Chatroulette phenomenon as a specimen of digital social randomnessThe Algorithm Whisperer
The 1962 Tanganyika laughter epidemicHistoryBaddie_99
The 1752 War of the Buffoons opera rivalry in ParisHistoryTea_spilled
The way a cold spoon makes a hot latte louderEntropy_Espresso
The 1928 red line drawn on a Middle East oil mapThe_History_Heist
The 'decompression zone' at the entrance of retail storesAd_Exposer_99
The vestigial vomeronasal organ in the human noseBioGlitch_Detective
The way a metal fork sparks in the microwavePhysicsOnTap
The 'convenience fee' on digital apartment rent paymentsMillennialDebtTrap
The three-second memory span of the common goldfishFactCheckFelix
The material persistence of a discarded 1990s glow-in-the-dark ceiling starScrapHeap_Socrates
The 'parking crater' phenomenon in American downtownsZoning_Zar_99
The Roche Limit: The point where moons become planetary ringsFilmy_Funda
The informal logic of makeshift balconies in urban slumsMeterDown_Manoj
The scandalous auction of the Roman Empire to Didius JulianusChaiWithChitra
The heat transfer efficiency of copper-bottomed cookwareEngg. Sharma Ji
The 'sneaker male' mating strategy of giant cuttlefishProducer_X
The neon glow of bioluminescent plankton in the surfThe Wave Whisperer
The biological progression of necrotizing fasciitisNurse_Bec_88
The 'Free-Rider Problem' and why some blokes skip their shoutTradie_Kant_Wait
The way a neural network identifies patterns in random noiseThe Digital Drover
The 'unusable' ornamental balconies of modern 'luxury' condo towersFlat White 42
The 'Graupel' phenomenon and the science of soft hailPenelope_Cloudy
The peeling price tag on a plaster cast of a gargoyleThe Bric-a-Brac Philosopher
How comfrey mines nutrients from deep within the subsoilDiggingWithDave
The way honey resists bacteria and never spoilsAlistair Cook-Book
The 'Next Train' countdown clocks on London Underground platformsMindTheGap
The 1519 Groom of the Stool in Henry VIII's courtDr. Diggory
The 2008 Icelandic 'Viking Raiders' financial meltdownPoshSosh
The medieval Poulaine shoes and their status-seeking pointed toesSaree_Not_Sorry
The six-month sovereignty swap of Pheasant IslandSelected_Sandeep
The way slaked lime creates the crunch in street-side pumpkin candyTikki_Tadka
The fusion of human chromosome 2Pivot_Prateek
The Richat Structure: The geological 'Eye' of the Sahara DesertAlistair Vance
The 17th-century scavenging of clay tobacco-pipe fragments from urban mudBinChicken_DeepDive
The physical inheritance of the Habsburg JawShazza_The_Oracle
The 'Decoy Effect' on a cinema popcorn menuBruce McEvoy (Unfiltered)
The 19th-century 'Bowdlerization' of Shakespeare's playsGafferGazza_Reads
The logic of 'regular expressions' for finding patterns in textNan_Binary
The way a kebab spit rotates to cook the meat evenlyPubLogic_Gaz
The pressure-resistant internal chambers of a nautilus shellCaptain_Jugaad
The AUKUS nuclear submarine dealGully_Googly
The "Habsburg Jaw" in historical royal portraitsThe Ego Architect
The 1884 Berlin ConferenceCashFlowKing_1776
The timing distortion of a pulsar orbiting a black holeArthur T. Chronos
The lethal tidal forces of spaghettification near a black holeInterstellar_Karen
The 4.4 billion-year-old Jack Hills zirconsDr. Fossil-Feud
The total surface area of the solar system's planetsVoidNavigator_99
The market for lemons in luxury watch flippingBenjamin J. Sterling
The molecular science of the 'parasite cleanse' papaya seed trendSarah_NoFilter
The 'Infinite Scroll' mechanism in social media appsGlitchInTheMatrix
The ergonomic standing deskCorporate_Cringe_Hunter
The 17th-century 'Kipper und Wipper' coin debasement crisisDr. Arthur Grift
The 'Veblen Good' logic of a $1,000 plain white T-shirtThe_Broke_Economist
The vestigial tailbone at the base of the spineThe Meat-Suit Mechanic
The colony of bacteria and yeast in your earwaxDr.GrossOut
The 1784 royal investigation into Franz Mesmer’s 'Animal Magnetism' tubsHistoryTea_spilled
The way a tea kettle whistles when it gets too hotEntropy_Espresso
The racial screening of the 1944 Liberation of Paris troopsThe_History_Heist
The oversized shopping carts in modern grocery storesAd_Exposer_99
The 'Foramen Ovale' hole in the human heartBioGlitch_Detective
The evolution from the pneumatic tube to the modern internet routerTesla's Roommate
The business model of venture-backed cloud kitchen networksMarcus J. Sterling
Splitting the dinner bill evenly when your friend orders the steakMarcus J. Thorne
The 8% of the human genome composed of fossilized ancient virusesDr. Buzzkill
The way a popcorn kernel jumps when it popsPhysicsOnTap
The 'overdraft protection' setting in mobile banking appsMillennialDebtTrap
The statistical frequency of gunfights in the American Old WestFactCheckFelix
The industrial ammonia gas used to sanitize commercial ground beefDr. Marcus Thorne
The 2014 Philae lander bouncing into a dark comet shadowAstro_Ash
The Barreleye fish's transparent head and rotating internal eyesDr. Goo
The 19th-century ostrich feather investment bubbleBubbleWatcher_08