René's URL Explorer Experiment

{"@context":"http://schema.org","@type":"WebSite","@id":"www.mentalfloss.com","url":"https://www.mentalfloss.com","name":"Mental Floss","description":"Discover fun math facts, trivia, and surprising stories on Mental Floss—content that entertains, educates, and satisfies your curiosity.","publisher":{"@type":"Organization","name":"Mental Floss","url":"https://www.mentalfloss.com","logo":{"@type":"ImageObject","url":"https://images2.minutemediacdn.com/image/upload/v1541941289/frontier/sites/logos/mental-floss-logo-120px-height.png"}},"inLanguage":"en-US","mainEntity":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/math","url":"https://www.mentalfloss.com/science/math","name":"Math Facts, History & Quizzes | Mental Floss","description":"Discover fun math facts, trivia, and surprising stories on Mental Floss—content that entertains, educates, and satisfies your curiosity.","mainEntityOfPage":{"@type":"WebPageElement","@id":"https://www.mentalfloss.com/science/math#main-content","name":"Main Content","description":"Discover fun math facts, trivia, and surprising stories on Mental Floss—content that entertains, educates, and satisfies your curiosity."}}}

{"@context":"http://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.mentalfloss.com"}]}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/quizzes/pass-3rd-grade-math-quiz-most-people-miss-one","headline":"Can You Pass This 3rd Grade Math Quiz? Most People Miss at Least One","description":"It might be more difficult than you think! ","author":{"@type":"Person","name":"Logan DeLoye"},"datePublished":"2026-09-18T21:00:00Z","dateModified":"2026-09-18T21:00:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/quizzes/pass-3rd-grade-math-quiz-most-people-miss-one"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/entertainment/brain-teasers-with-answers","headline":"40 Tricky Brain Teasers That Will Melt Your Gray Matter","description":"Put your brain to work with 50 tricky brain teasers that test logic, math, lateral thinking, and problem-solving skills. See how many you can solve.","author":{"@type":"Person","name":"Nitya Rao"},"datePublished":"2026-09-18T00:00:00Z","dateModified":"2026-09-18T00:00:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/entertainment/brain-teasers-with-answers"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/entertainment/riddles-for-kids-with-answers","headline":"The Best Riddles for Kids to Make Learning Feel Like Play (With Answers)","description":"Can your kids crack these 100 mind-bending riddles? Explore clever brainteasers with answers that build critical thinking, focus, and abstract logic.","author":{"@type":"Person","name":"Nitya Rao"},"datePublished":"2026-08-22T20:00:02Z","dateModified":"2026-08-22T20:00:02Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/entertainment/riddles-for-kids-with-answers"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/culture/education/act-vs-sat-whats-the-difference","headline":"ACT vs. SAT: What’s the Difference?","description":"Learn about the SAT and ACT differences, including test format, scoring systems, and duration.","author":{"@type":"Person","name":"CaLea Johnson"},"datePublished":"2025-03-15T14:03:00Z","dateModified":"2025-03-15T14:03:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/culture/education/act-vs-sat-whats-the-difference"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/geography/maps/most-popular-pie-recipes-by-state-mapped","headline":"The Most Popular Pie Recipes by State, Mapped ","description":"From savory chicken pot pie to the nutty pecan pie, find out which dishes people are interested in for Pi Day.","author":{"@type":"Person","name":"CaLea Johnson"},"datePublished":"2025-03-11T18:59:00Z","dateModified":"2025-03-11T18:59:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/geography/maps/most-popular-pie-recipes-by-state-mapped"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/math/facts-about-katherine-johnson-nasa","headline":"10 Fascinating Facts About Katherine Johnson","description":"Before she helped send the first astronauts to the moon, Katherine Johnson was a human “computer” working behind the scenes at NASA.","author":{"@type":"Person","name":"Michele Debczak"},"datePublished":"2018-08-24T08:00:00Z","dateModified":"2025-02-21T21:08:21Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/math/facts-about-katherine-johnson-nasa"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/animals/punxsutawney-phil-prediction-accuracy","headline":"How Accurate Are Punxsutawney Phil’s Groundhog Day Weather Predictions?","description":"The stats indicate that practice doesn’t always make perfect when it comes to mid-sized meteorological rodents.","author":{"@type":"Person","name":"Ellen Gutoskey"},"datePublished":"2020-01-28T15:30:00Z","dateModified":"2025-01-31T19:41:28Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/animals/punxsutawney-phil-prediction-accuracy"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/culture/education/most-regretted-college-majors","headline":"The College Majors Graduates Regret the Most (and Least)","description":"The humanities aren't in first place.","author":{"@type":"Person","name":"mentalfloss .com"},"datePublished":"2024-10-23T12:01:00Z","dateModified":"2024-10-23T12:01:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/culture/education/most-regretted-college-majors"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/math/remember-first-100-digits-pi-using-basic-technique","headline":"A Simple Trick for Remembering the First 100 Digits of Pi","description":"A druid, Muammar Gaddafi, and a horseshoe are all players in this genius memory hack.","author":{"@type":"Person","name":"Caitlin Schneider"},"datePublished":"2015-12-11T08:30:00Z","dateModified":"2024-03-14T20:24:39Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/math/remember-first-100-digits-pi-using-basic-technique"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/language/how-memorize-pi-if-youre-word-person","headline":"How to Memorize Pi if You’re a Word Person","description":"Pi Day offers something for the math-lover and baked-goods lover. What about the word lover? Here are some tips and tricks for memorizing the digits of pi with words.","author":{"@type":"Person","name":"Arika Okrent"},"datePublished":"2015-03-14T09:00:00Z","dateModified":"2024-03-13T14:43:12Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/language/how-memorize-pi-if-youre-word-person"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/space/how-much-is-earth-worth","headline":"How Much Does Earth Cost?","description":"Earth may be the most precious place we have, but it isn't priceless. We know because one scientist did the math.","author":{"@type":"Person","name":"Michele Debczak"},"datePublished":"2020-11-26T06:00:00Z","dateModified":"2023-09-13T18:52:42Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/space/how-much-is-earth-worth"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/6-famous-scientists-and-inventors-who-struggled-math","headline":"6 Famous Scientists and Inventors Who Struggled With Math","description":"Some of the world's greatest scientists have struggled with math—just like the rest of us.","author":{"@type":"Person","name":"Mark Mancini"},"datePublished":"2015-10-19T02:00:00Z","dateModified":"2023-08-29T20:13:07Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/6-famous-scientists-and-inventors-who-struggled-math"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/technology/did-the-bouncing-dvd-logo-ever-hit-the-corner-of-the-screen","headline":"Did the Bouncing DVD Logo Ever Actually Hit the Corner of the Screen?","description":"Dunder Mifflin employees aren't the only people curious about whether that now-iconic DVD logo ever really does hit the corner of the screen.","author":{"@type":"Person","name":"Garin Pirnia"},"datePublished":"2023-08-21T20:30:43Z","dateModified":"2023-08-21T20:30:43Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/technology/did-the-bouncing-dvd-logo-ever-hit-the-corner-of-the-screen"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/transportation/reason-gas-stations-charge-910-cent","headline":"The Reason Gas Stations Charge 9/10 of a Cent","description":"The unusual fractional price you see at gas stations has roots in the Great Depression, but marketing is to blame, too.","author":{"@type":"Person","name":"Jake Rossen"},"datePublished":"2021-03-09T22:00:00Z","dateModified":"2023-06-12T16:23:51Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/transportation/reason-gas-stations-charge-910-cent"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/physics/albert-einstein-facts","headline":"19 Brilliant Facts About Albert Einstein","description":"Once a simple patent clerk, Albert Einstein changed the world with his theories of special and general relativity.","author":{"@type":"Person","name":"Lucas Reilly"},"datePublished":"2019-03-14T02:00:00Z","dateModified":"2023-03-14T13:41:06Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/physics/albert-einstein-facts"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/math/why-are-there-5280-feet-mile-making-sense-measurements","headline":"The Origins of 7 Common Units of Measurement","description":"Ever wonder why there are 5280 feet in a mile?","author":{"@type":"Person","name":"Ethan Trex"},"datePublished":"2017-08-25T11:10:00Z","dateModified":"2023-01-13T21:54:44Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/math/why-are-there-5280-feet-mile-making-sense-measurements"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/technology/why-apple-ipads-dont-have-calculators","headline":"Why Don’t Apple iPads Have a Calculator?","description":"Apple’ s iPad is a versatile computing device that has pretty much anything a user could ever want—except a standard calculator. Here’ s why.","author":{"@type":"Person","name":"Jake Rossen"},"datePublished":"2020-07-01T13:00:00Z","dateModified":"2022-12-30T15:49:22Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/technology/why-apple-ipads-dont-have-calculators"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/geography/cities/worlds-most-beautiful-cities-according-to-science","headline":"The World’s 25 Most Beautiful Cities, According to Science","description":"If the Golden Ratio is your metric, the most beautiful city in the world is in Italy.","author":{"@type":"Person","name":"mentalfloss .com"},"datePublished":"2022-08-04T20:00:04Z","dateModified":"2022-08-04T20:00:04Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/geography/cities/worlds-most-beautiful-cities-according-to-science"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/quizzes/brainteasers/prepare-be-stumped-math-problem-meant-fifth-graders","headline":"Prepare to Be Stumped By This Math Problem Meant for Fifth Graders","description":"Numbers are hard.","author":{"@type":"Person","name":"Alvin Ward"},"datePublished":"2018-03-20T19:00:00Z","dateModified":"2022-07-22T17:53:15Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/quizzes/brainteasers/prepare-be-stumped-math-problem-meant-fifth-graders"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/math/fibonacci-sequence-examples","headline":"6 Fascinating Places to See the Fibonacci Sequence","description":"Fibonacci developed his theory based on rabbit population growth, but you'll find the golden ratio in everything from flowers to outer space.","author":{"@type":"Person","name":"Allison Futterman"},"datePublished":"2022-06-17T20:00:00Z","dateModified":"2022-06-17T20:00:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/math/fibonacci-sequence-examples"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/quizzes/brainteasers/solve-mit-math-entrance-exam","headline":"Can You Solve This Math Problem From MIT's 1876 Entrance Exam?","description":"You don't need a ton of algebra knowledge to solve this math problem from MIT's 1876 entrance exam, but it helps.","author":{"@type":"Person","name":"Michele Debczak"},"datePublished":"2021-01-21T13:00:00Z","dateModified":"2022-05-26T21:16:03Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/quizzes/brainteasers/solve-mit-math-entrance-exam"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/animals/insects/bees-understand-odd-even-numbers","headline":"Getting a Bee in Math: Honey Bees Can Distinguish Between Odd and Even Numbers","description":"It's entirely possible the bee buzzing around in your yard is slightly better at math than you are.","author":{"@type":"Person","name":"Jake Rossen"},"datePublished":"2022-05-10T19:00:15Z","dateModified":"2022-05-10T19:00:15Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/animals/insects/bees-understand-odd-even-numbers"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/quizzes/brainteasers/no-one-can-figure-out-second-grade-math-problem","headline":"No One Can Figure Out This Second Grade Math Problem","description":"Adults are stumped. And they’re not happy about it.","author":{"@type":"Person","name":"Alvin Ward"},"datePublished":"2018-02-02T18:45:00Z","dateModified":"2022-05-09T15:10:34Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/quizzes/brainteasers/no-one-can-figure-out-second-grade-math-problem"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/holidays/weird-holidays/celebrate-22222-twosday","headline":"Don't Forget to Celebrate 2/22/22 This 'Twosday'","description":"The last week of February is packed with palindromes, the most anticipated of which is 2/22/22, or \"Twosday.\"","author":{"@type":"Person","name":"Michele Debczak"},"datePublished":"2022-02-22T11:15:00Z","dateModified":"2022-02-22T11:15:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/holidays/weird-holidays/celebrate-22222-twosday"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/technology/robots/why-creepy-things-called-uncanny-valley","headline":"Why Are Creepy Things Called 'Uncanny Valley'?","description":"It might look almost human, but something about it just feels eerie.","author":{"@type":"Person","name":"Paul Anthony Jones"},"datePublished":"2026-11-09T17:00:01Z","dateModified":"2026-11-09T17:00:01Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/technology/robots/why-creepy-things-called-uncanny-valley"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/weather/thanksgiving-weather-forecast-2026-map","headline":"Snow Showers or Sun? The 2026 Thanksgiving Weather Forecast, Mapped","description":"Will snow delay your Thanksgiving travel? Check out the 2026 Farmers' Almanac weather forecast map breakdown for every region in the U.S.","author":{"@type":"Person","name":"Jenny Cohen"},"datePublished":"2026-11-04T17:00:00Z","dateModified":"2026-11-04T17:00:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/weather/thanksgiving-weather-forecast-2026-map"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/plants/why-do-leaves-change-color","headline":"Why Do Leaves Change Color?","description":"Leave it to nature to cushion the onset of cold weather with a literal golden lining. In exchange for red ears and runny noses, come fall, we get a sight for so","author":{"@type":"Person","name":"Nitya Rao"},"datePublished":"2026-10-29T20:13:49Z","dateModified":"2026-10-29T20:13:49Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/plants/why-do-leaves-change-color"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/food/ancient-miracle-wheat-discovery-italian-farmer","headline":"Ancient Italian \"Miracle Wheat\" Found in Attic Could Help Farmers Withstand Drought","description":"An Italian farmer named Claudio Grossi found a mysterious variety of wheat in his attic, and recognized it in a passage in the Bible. His discovery could help farmers build resilience against climate change.","author":{"@type":"Person","name":"Eden Gordon"},"datePublished":"2026-10-28T19:00:00Z","dateModified":"2026-10-28T19:00:01Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/food/ancient-miracle-wheat-discovery-italian-farmer"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/geography/u-s-locations-biggest-temperature-swings","headline":"The U.S. Locations With the Biggest Recorded Temperature Swings, Ranked","description":"The changes in temperature in a short period of time are truly hard to believe, with Montana having spots in the top three.","author":{"@type":"Person","name":"Jenny Cohen"},"datePublished":"2026-10-26T18:00:02Z","dateModified":"2026-10-26T18:00:02Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/geography/u-s-locations-biggest-temperature-swings"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/random-facts/why-we-scream-when-scared","headline":"Why Do We Scream When We’re Scared?","description":"A scream is built to cut through every other sound around it, but plenty of people scream when they aren’t scared at all.","author":{"@type":"Person","name":"Matt Hoffman"},"datePublished":"2026-10-18T16:00:00Z","dateModified":"2026-10-18T16:00:00Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/random-facts/why-we-scream-when-scared"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/geography/states/how-likely-your-state-have-white-christmas-2026","headline":"How Likely Is Your State to Have a White Christmas in 2026?","description":"And which major city in each state has the best chance of seeing snow on Christmas Day. ","author":{"@type":"Person","name":"Logan DeLoye"},"datePublished":"2026-10-15T12:00:00Z","dateModified":"2026-10-15T12:00:01Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/geography/states/how-likely-your-state-have-white-christmas-2026"}}

{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://www.mentalfloss.com/science/weather/snowiest-month-by-state-2026-map","headline":"The Snowiest Month in Every State for 2026, Mapped","description":"Discover the snowiest month in every state, from New Mexico’s December peak to March storms in the West.","author":{"@type":"Person","name":"Nitya Rao"},"datePublished":"2026-10-14T20:00:01Z","dateModified":"2026-10-14T20:00:01Z","mainEntityOfPage":{"@type":"WebPage","@id":"https://www.mentalfloss.com/science/weather/snowiest-month-by-state-2026-map"}}