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April 2021
  1. Ancient Colors
  2. Non-Spanish Languages of Spain
  3. Charles Boycott
  4. Wrestlemania
  5. The Assassination of James A. Garfield
  6. Why Does Vatican City Exist?
  7. Polynesian Navigators
  8. The United State’s Name
  9. Al Andalus
  10. The Podcast About Podcasts
  11. The Incomparable Hedy Lamarr
  12. Why Did Hitler Declare War on the United States?
  13. April Fool’s Day
March 2021
  1. Mount Athos
  2. The History of the English Language
  3. Spanish Africa
  4. The Red Ball Express
  5. Fantasy Nobel Prizes: Isaac Newton
  6. The 7 People Who Control the Internet
  7. The Problem With Track & Field World Records
  8. Did Shakespeare Write the Works of Shakespeare?
  9. Rome: Republic vs Empire
  10. La Liga
  11. The Svalbard Global Seed Vault
  12. Understanding Orchestras
  13. The B-52 Stratofortress
  14. The Yellow Fleet
  15. St. Patrick’s Day
  16. Unratified Amendments
  17. El Gordo
  18. Daylight Savings Time
  19. How the US Civil War Really Ended
  20. How Australia Won Its First Winter Olympic Gold Medal
  21. Why Does San Marino Even Exist?
  22. A History of Vaccines
  23. The Isabella Stewart Gardner Museum Heist
  24. The Mercury 13
  25. The Iditarod
  26. Operation Sea Lion
  27. Darwin’s Other Theory
  28. President for a Day
  29. The Deep Biosphere
  30. Zeppelins
  31. The War of Jenkins Ear
February 2021
  1. The Princes in the Tower
  2. The Zimmerman Telegram
  3. Cathedrals
  4. Mountweazles
  5. A History of Mars Exploration
  6. The London Beer Flood
  7. Units of Measure
  8. Mitochondrial Eve
  9. The Elevator
  10. Space Junk
  11. Who Was the Richest Person in History? (Encore)
  12. Why are French Fries called French Fries? (Encore)
  13. Why Doesn’t the US Use The Metric System? (Encore)
  14. Decimation
  15. The Theremin
  16. Valentines Day
  17. Domus Aurea
  18. The SS Politician
  19. Hammurabi’s Code
  20. The Monty Hall Problem
  21. The Legend of Andre the Giant
  22. Jack the Ripper
  23. The Super Bowl
  24. AM/FM
  25. Tulipmania
  26. The Smallest Country in the World
  27. The 1937 Soviet Census
  28. Extraterritoriality

January 2021
  1. The Dionne Quintuplets
  2. Operation Plumbbob
  3. QWERTY
  4. The Green Bay Packers
  5. Cosmos 954
  6. Milankovitch Cycles
  7. Project MKUltra
  8. The Year of the Five Emperors
  9. The Year of the Four Emperors
  10. The Oxford English Dictionary
  11. Exclaves and Enclaves
  12. Inauguration Day
  13. The Crash at Crush
  14. ALL RATS MUST DIE!!!
  15. The British Pound(s)
  16. Moving Day in New York
  17. Did Gutenburg Really Invent the Printing Press?
  18. The Dunbar Number
  19. D.B. Cooper
  20. Surströmming
  21. Hispania
  22. The Nuclear Football
  23. The McRib
  24. The Erfurt Latrine Disaster
  25. The Golden Record
  26. The Last Germans to Surrender
  27. The 12 Days of Christmas
  28. The Canary Islands
  29. Reginaldus
  30. The SS Warrimoo
  31. Why Does The New Year Start on January 1?
December 2020
  1. Nijmegen: The City That Remembers (Encore)
  2. The Election of 1824 (Encore)
  3. The Most Famous Song in the World (Encore)
  4. Kayfabe (Encore)
  5. The Six Star General (Encore)
  6. Atlantropa: The Most Ridiculous Idea Ever (Encore)
  7. The Last Crow War Chief (Encore)
  8. The Most Dominant Athlete Ever (Encore)
  9. The Empire that Never Existed (Encore)
  10. Why Do We Celebrate Christmas on December 25?
  11. Catalonian Christmas Traditions
  12. Why Don’t We All Drive on the Same Side?
  13. What’s the Deal With Dark Matter?
  14. The Speech Richard Nixon Never Gave
  15. The Rosetta Stone
  16. Atomic Bombs and Two-Piece Swimsuits
  17. All About ZIP Codes
  18. The World’s Oldest Democratic Body
  19. The Terrible Fate of Blanche Monnier
  20. Aluminum
  21. Radiometric Dating
  22. The Man Who Didn’t Want to be Pope
  23. Roman Concrete
  24. The Mercator Projection
  25. Picasso
  26. The Real Illuminati
  27. The Voynich Manuscript
  28. How Many Nobel Prizes Should Einstein Have Won?
  29. Syndrome K
  30. Martha Mitchell Was Right
  31. Radiation 101
November 2020
  1. Spanish Foods
  2. Battle of Cannae
  3. The House of David
  4. Operation Tannenbaum
  5. Get the Lead Out
  6. George Eyser
  7. The History of Thanksgiving
  8. The Holy Grail
  9. America’s First Law
  10. The World’s Largest Co-Principality
  11. Operation London Bridge
  12. UNESCO World Heritage Sites
  13. The Pintupi Nine
  14. The Election of 1800
  15. Spanish Festivals
  16. Jury Duty
  17. The Longest Games in History
  18. The Sultana Steamboat Disaster
  19. Blues vs Greens
  20. The Assassination of Arch Duke Franz Ferdinand
  21. Really Big Telescopes
  22. The Sagrada Familia
  23. Ramanujan
  24. A History of Bread
  25. The Pig War
  26. What Exactly Happens After Election Day?
  27. Extremely Close Elections
  28. Who Was the Richest Person in History?
  29. The Camino de Santiago
  30. The Great Molasses Flood
October 2020
  1. Halloween
  2. Last Man on the Moon
  3. The History of Antarctica
  4. Domo Arigato Mr. Momofuku
  5. The World’s Deepest Hole
  6. The Continents
  7. Outlawry
  8. Tsar Bomba
  9. Extremely Long Term Debt
  10. The History of Presidential Debates
  11. Pyrrhic Victory
  12. The Election of 1876
  13. The Purchase of Alaska
  14. Operation Mincemeat
  15. The Curious Case of Kaspar Hauser
  16. The History of Ketchup
  17. Number One at Being Number Two
  18. Episode 100
  19. The Earth’s Most Extreme Places
  20. The SR-71 Blackbird
  21. Take the Penny, Leave the Penny
  22. That Time the CIA Kidnapped a Soviet Lunar Lander
  23. The Fabian Strategy
  24. Containerization
  25. Who is the Current Roman Emperor?
  26. Cold Fusion
  27. Wrestling’s GOAT: Aleksandr Karelin
  28. Károly Takács: Ambidextrous Gold Medalist
  29. The Eradication of Smallpox
  30. The Tunguska Event
  31. The Hagia Sophia

September 2020
  1. The Electoral College
  2. Robert Smalls: Man of Action
  3. US Territories
  4. Greek Fire
  5. Isambard Kingdom Brunel
  6. Point Nemo
  7. Potpourri Vol II: The Frozen Four
  8. The Global Positioning System
  9. All Roads Lead to Rome
  10. The Lykov Family
  11. Nijmegen: The City That Remembers
  12. The Discovery of Fire
  13. No Show
  14. No Show
  15. No Show
  16. No Show
  17. No Show
  18. No Show
  19. Potpourri Volume I: Survival
  20. A Fist Full of Dollars
  21. Who Discovered Calculus?
  22. Fallacious Reasoning
  23. The Fosbury Flop
  24. An Incredibly Bright Idea
  25. The Two-Hour Marathon
  26. The First Transatlantic Cable
  27. The Election of 1824
  28. The Seven Wonders of the Ancient World
  29. That New Pope Smell
  30. The World’s Oldest Satellite
August 2020
  1. A Brief History of Timekeeping
  2. The First Pandemic
  3. Eponymous Laws
  4. Football, Soccer, and Rugby
  5. The Latin Alphabet
  6. Why are French Fries called French Fries?
  7. The Last US Civil War Pension
  8. The Most Famous Song in the World
  9. The US/Canadian Border
  10. The English Longbow
  11. The Man Who Fed the World
  12. Why Doesn’t the US Use the Metric System?
  13. Cursus Honorum
  14. European vs North American Sports
  15. Lis Hartel: A Remarkable Olympian
  16. The United Countries of America
  17. Church of the Holy Sepulchre
  18. The Real Life Dexter
  19. Damnatio Memoriae
  20. The Washington Generals
  21. Kayfabe
  22. Drug Lord Hippopotamuses
  23. Grandmother of Europe
  24. Boxing’s Alphabet Soup
  25. Lunar Orbit Rendezvous
  26. The Original Dow Jones Companies
  27. Lloyd Burke: American Badass
  28. The Great Peshtigo Fire
  29. Imperial Leftovers
  30. Van Halen and M&Ms
  31. The Pitch Drop Experiment

July 2020
  1. Beamonesque
  2. The French Scrabble Champion
  3. The Interstate Highway System
  4. How Many Planets Are There?
  5. The Prime Minister Who Disappeared
  6. The Julian and Gregorian Calendars
  7. Atlantropa: The Most Ridiculous Idea Ever
  8. When did Canada REALLY become independent?
  9. Neil Armstrong’s First Time in Space
  10. Blowouts
  11. The British Line of Succession
  12. The Six Star General
  13. The 1960 Popular Vote
  14. Jesse Owens vs Usain Bolt: Who Would Win?
  15. Zero, My Hero
  16. The Army That Never Was
  17. Time Zone Oddities
  18. Rutherford B. Hayes is a Big Deal in Paraguay
  19. The Last Crow War Chief
  20. Disco Demolition Night
  21. The Greatest Simplest Idea in the World
  22. Stealing the Mona Lisa
  23. Ancient Rome and Ancient China
  24. The Greatest Thing Since Sliced Bread
  25. How Many Countries Are There?
  26. Broccoli, James Broccoli
  27. The 1904 Olympic Marathon
  28. The REAL Independence Day
  29. The Most Dominant Athlete Ever
  30. President Tyler’s Grandsons
  31. The Empire that Never Existed