
The Man Who Worked At Subway, Then Solved An "Impossible" Problem
Do twin primes go on forever? Sponsored by Brilliant - Head to https://brilliant.org/veritasium to try Brilliant’s tutor for free, plus receive 20% off an annual Premium subscription If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter For early access to work in progress videos join our patreon https://ve42.co/VePatreon ▀▀▀ A huge thank you to Alex Kontorovich, Andrew Granville, James Maynard, Roger Heath-Brown, Dimitris Koukoulopoulos, Debmalya Basak & George Shakan for their invaluable expertise and contributions to this video! ▀▀▀ 0:00 What are twin primes? 3:08 How To Find Prime Numbers 6:11 The Sieve of Eratosthenes 11:26 The Closest We’ve Come To Proving Twin Primes 15:54 Searching For A Bounded Gap 18:47 How A Subway Worker Changed The Game 29:20 Finding An Upper Bound 32:04 Maynard and Polymath 36:42 Will we solve the twin prime conjecture? ▀▀▀ References can be found here: https://ve42.co/TwinPrimesRefs ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, Anton Ragin, armedtoe, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Charles Ian Norman Venn, Daniel Martins, Data Don, Dave Kircher, David Johnston, David Tseng, EJ Alexandra, Evgeny Skvortsov, Garrett Mueller, Gnare, Hayden Christensen, Hong Thai Le, Ibby Hadeed, Jeromy Johnson, Jesse Brandsoy, Jon Jamison, Juan Benet, Kelcey Steele, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Mark Heising, Martin Paull, Meekay, meg noah, Michael Krugman, Moebiusol - Cristian, Orlando Bassotto, Parsee Health, Paul Peijzel, Richard Sundvall, Robson, Sam Lutfi, Shalva Bukia, Sinan Taifour, Tj Steyn, Ubiquity Ventures, Vahe Andonians, wolfee ▀▀▀ Writers: Vibhor Pandey, Casper Mebius and Alex Kontorovich Producer & Director: Vibhor Pandey Presenters: Derek Muller & Casper Mebius Editors: George Reynolds & Trenton Oliver Camera Operators: Casper Mebius & Derek Muller Animators: Emma Wright, Andrew Neet, Alex Drakoulis, Domonkos Józsa & Fabio Albertelli Illustrators: Jakub Misiek Additional Editor: James Stuart Researchers: Darius Garewal, Gabe Strong, Sophia Rose Thumbnail Designers: Abdallah Rabah, Ben Powell, Daniel Ellacott & Patryk Ziolkowski Production Team: Jess Bishop-Laggett, Matthew Cavanagh, Anna Milkovich & Josh Pitt Executive Producers: Derek Muller, Casper Mebius & Emily Zhang Additional video/photos supplied by Getty Images & Storyblocks Music from Epidemic Sound
Veritasium · 5h · 41:30

WWDC 2026 Impressions: Yeah, That's About Right
Everything you need to know about the new Siri AI and iOS 27 Get up to 40% off at https://ridge.com/MKBHD for Father’s Day! Ends June 21st! MKBHD Merch: http://shop.MKBHD.com Playlist of MKBHD Intro music: https://goo.gl/B3AWV5 ~ http://twitter.com/MKBHD http://instagram.com/MKBHD http://facebook.com/MKBHD
Marques Brownlee · 6d · 16:28

Something is jamming GPS over Europe. Here's what we found
Something is disrupting GPS signals across Europe. Sponsored by Ground News. Go to https://ground.news/Ve for 40% off the unlimited Vantage plan. If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter ▀▀▀ 0:00 What is jamming Europe’s GPS? 4:43 How does GPS work? 10:46 How easy is it to jam GPS? 12:18 The Hunt To Find The Jammer 17:12 Who are the possible culprits? 20:06 The Investigation Goes Public 23:00 Narrowing In On The Jammer 25:15 Cosmos 2546 28:25 A Secret Messaging Service? 29:19 What happens if we lose GPS? ▀▀▀ Special thanks to the experts and collaborators who made this video possible: Professor Todd Humphreys and Dr Zach Clements at the University of Texas at Austin, whose research this story is based on - thank you for sharing your data, your time, and the inside story of the hunt. Ramsey Faragher, Director of the Royal Institute of Navigation, for the brilliant interview, feedback and stories that helped to shape this video. Richard D. Easton, for helping us understand the history of GPS. Dana Goward, President of the Resilient Navigation and Timing Foundation, for providing context on interference and alternative systems. Richard Bowden and Luis Enrique Aguado from GMV for sharing their independent work tracing the source of the interference. Ben Watts, for sharing his first-hand experience of GPS jamming and spoofing from the cockpit. KeepTrack (https://keeptrack.space/) for generously giving us access to their satellite-tracking software, which we used to visualise the search through 15,000 satellites for the culprit. And to GPSWise (https://gpswise.aero/) for kindly providing their software which we used to visualise GPS jamming and spoofing. Bartosz Ciechanowski, whose interactive GPS explainer (https://ciechanow.ski/gps/) was a great resource for research and the basis for one of our technical animations. Thank you for allowing us to build on your work. ▀▀▀ References: Clements, Z. L., Kriezis, A., & Humphreys, T. E. (2026). Chasing Lightning: Detecting, Characterizing, and Identifying a Powerful Space-Based GNSS Interference - https://ve42.co/GNSSInterference The rest here: https://ve42.co/GPSJammingRefs ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, André Powell, Anton Ragin, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Bryan Ackermann, Chris Brewer, Data Don, Dave Kircher, David Johnston, David Tseng, EJ Alexandra, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Hayden Christensen, Hong Thai Le, Ibby Hadeed, Jeromy Johnson, Jesse Brandsoy, Juan Benet, Kelcey Steele, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Mark Heising, Martin Paull, Meekay, meg noah, Michael Krugman, Moebiusol - Cristian, Orlando Bassotto, Parsee Health, Paul Peijzel, Richard Sundvall, Robson, Sam Lutfi, Shalva Bukia, Sinan Taifour, Tj Steyn, Ubiquity Ventures, Vahe Andonians, wolfee ▀▀▀ Writer, Producer & Director: Emilia Gyles Presenters: Derek Muller & Gregor Čavlović Editor: Peter Nelson Asst. Editor & Sound Designer: James Stuart Animators: Domonkos Józsa, Emma Wright, Alex Drakoulis & Andrew Neet Illustrators: Jakub Misiek & Maria Gusakovich Stop Motion: Sulli Yost Researchers: Aakash Singh Bagga, Sophia Rose & Callum Cuttle Thumbnail Designers: Abdallah Rabah, Ren Hurley, Ben Powell & Daniel Ellacott Production Team: Jess Bishop-Laggett, Matthew Cavanagh & Anna Milkovic Executive Producers: Casper Mebius, Derek Muller & Gregor Čavlović Additional video/photos supplied by Getty Images and Storyblocks Music from Epidemic Sound
Veritasium · 10d · 34:17

Google Maps is unreasonably fast. Let me explain
The math behind Google Maps. Sponsored by boot.dev - Click this link https://boot.dev/?promo=VERITASIUM and use our code VERITASIUM to get 25% off your first payment for boot.dev. If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter For those curious about the path-count estimate: we estimated the non-backtracking paths NYC→SF, using a sparse spatial network model with mean degree ≈ 2.5 and characteristic length ≈ √N. ▀▀▀ 0:00 What is a ‘shortest path algorithm’? 3:30 Dijkstra’s 20 Minute Algorithm 6:30 The First Route Planner 10:31 A* Search Algorithm 12:40 Shortest Doesn’t Mean Fastest 15:08 Road Network Hierarchy 18:29 Mapping North America - Nested Dissection 25:17 How do map apps work? 28:04 Simplicity is prerequisite for reliability ▀▀▀ Check out @twoswap's channel for some fantastic videos! A big thank you to Ben Strasser and Julian Dibbelt who were incredibly gracious with their time and feedback. Thank you to all the experts we interviewed for this video: Aaron Bernstein, Tim Roughgarden, Tomas Rokicki, Jon Kleinberg, Virginia Vassilevska Williams, Peter Sanders, and the team behind the SSSP Barrier Paper: Xinkai Shu, Ran Duan, Xiao Mao, Longhui Yin, Jiayi Mao For more information on how you choose A*'s heuristic, check out Polylog's video: https://youtu.be/A60q6dcoCjw?si=5LHOmZ8ZKvR_kLcx If you'd like more information on Minecraft's A*, check out RedLogic's video: https://youtu.be/Zg0Cxn8AVZA?si=DyECX4wmeuSb4c1n ▀▀▀ References: https://ve42.co/DijkstraRefs ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, André Powell, Anton Ragin, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Bryan Ackermann, Chris Brewer, Data Don, Dave Kircher, David Johnston, David Tseng, EJ Alexandra, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Hayden Christensen, Hong Thai Le, Ibby Hadeed, Jeromy Johnson, Jesse Brandsoy, Juan Benet, Kelcey Steele, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Mark Heising, Martin Paull, Meekay, meg noah, Michael Krugman, Moebiusol - Cristian, Orlando Bassotto, Parsee Health, Paul Peijzel, Richard Sundvall, Robson, Sam Lutfi, Shalva Bukia, Sinan Taifour, Tj Steyn, Ubiquity Ventures, Vahe Andonians, wolfee ▀▀▀ Writers: Sulli Yost Producer & Director: Sulli Yost Presenter: Henry van Dyck & Derek Muller Editor: Jonny Lennard and Trenton Oliver Additional Editor: James Stuart Camera Operators: Sulli Yost & Henry van Dyck Illustrators: Jakub Misiek & Maria Gusakovich Animators: @twoswap, Andrew Neet, Jonny Lennard, Alex Drakoulis & Fabio Albertelli Researchers: Aakash Singh Bagga & Callum Cuttle Thumbnail Designers: Abdallah Rabah, Ren Hurley, Ben Powell & Daniel Ellacott Production Team: Jess Bishop-Laggett, Glen Griffiths, Matthew Cavanagh & Anna Milkovic Executive Producers: Casper Mebius, Gregor Čavlović & Derek Muller Map data © OpenStreetMap contributors, available under the Open Database License: https://www.openstreetmap.org/copyright Additional video/photos supplied by Getty Images and Pond5 Music from Epidemic Sound
Veritasium · 15d · 29:54