500,0,500
2087792896,Curling
2087706496,Stateless People
2087620096,The Loomis Fargo Heist
2087533696,The Battle of Kasserine Pass
2087447296,The Darien Scheme
2087360896,Andersonville Prison
2087274496,Home Runs
2087188096,The Rise and Fall of Lin Biao
2087101696,Beavers
2087015296,Emperor Caligula
2086928896,The Dust Bowl
2086842496,The Song Dynasty
2086756096,Ice Cream
2086669696,The History of Science Fiction
2086583296,The Late Bronze Age Collapse
2086496896,Soccer in South America
2086410496,The Revolutions of 1848
2086324096,The Indus Valley Civilization
2086237696,The Science of Swimming
2086151296,The Iranian Revolution
2086064896,Everything You Never Really Cared To Know ... Groundhog Day
2085978496,Questions and Answers: Volume 39
1769853600,The Battle of Trafalgar 
1769767200,Patrice Lumumba and Congolese Independence
1769680800,The Crisis of the Third Century (Encore)
1769594400,Disney Animation
1769508000,Solidarity
1769421600,The Baseball Hall of Fame
1769335200,Sigmund Freud
1769248800,The Clovis First Hypothesis
1769162400,The Mali Empire
1769076000,The May Fourth Movement
1768989600,The Year 2025
1768903200,The Julio-Claudian Dynasty (Encore)
1768816800,The Great London Fire of 1666
1768730400,The Grateful Dead
1768644000,The Tokyo Trials
1768557600,Insanely Ridiculously Absurdly Large Numbers
1768471200,The House of Wisdom
1768384800,Moldova
1768298400,Leninism vs Maoism
1768212000,The Honey Hunters of the Sundarbans
1768125600,Area 51
1768039200,The Last Emperor of China (Encore)
1767952800,The Night Witches
1767866400,Earthquakes
1767780000,Gabon
1767693600,The Dark Origins of Fairy Tales, Part I
1767607200,Al Capone
1767520800,The Great Arab Revolt
1767434400,The Warsaw Ghetto Uprising
1767348000,The Defenestrations of Prague
1767261600,Questions and Answers: Volume 38
1767175200,The Boxer Rebellion (Encore)
1767088800,The Empire That Never Existed
1767002400,The Mahan Doctrine
1766916000,Episode 2001: A Podcasting Odyssey
1766829600,The Year 2000
1766743200,The Battle of Trenton (Encore)
1766656800,A History of Christmas Trees
1766570400,Maslow's Hierarchy of Needs
1766484000,National Geographic
1766397600,The Chartist Movement
1766311200,The Domestication of the Horse (Encore)
1766224800,Europa
1766138400,The 1994 Rwandan Genocide
1766052000,Synthetic Diamonds
1765965600,The History of Coca-Cola
1765879200,Lend Lease
1765792800,The Cortes of Leon of 1188
1765706400,The History of the Bow and Arrow (Encore)
1765620000,The Nancy Grace Roman Space Telescope
1765533600,Pocahontas
1765447200,Helium
1765360800,Romance Languages
1765274400,The Luddites
1765188000,All About Dog Breeds
1765101600,The Manhattan Project (Encore)
1765015200,Operation Bernhard
1764928800,A Brief History of Neckties
1764842400,NASCAR
1764756000,The History of Nintendo
1764669600,The Year 1975
1764583200,Questions and Answers: Volume 37
1764496800,Panama
1764410400,Italian vs German Fascism
1764324000,The Desecration of St. Denis (Encore)
1764237600,The Apollo 1 Disaster (Encore)
1764151200,Imperial Units of Measure (Encore)
1764064800,Roller Coasters
1763978400,The Paraguayan War (Encore)
1763892000,The Ottoman Empire
1763805600,The Kokoda Track 
1763719200,The Phoebus Cartel
1763632800,The Marshall Plan (Encore)
1763546400,Swiss Neutrality
1763460000,Hollow Nickel Case
1763373600,The V2 Rocket
1763287200,Alexander Hamilton
1763200800,The Fra Mauro Medieval World Map
1763114400,Borobudur
1763028000,LEGO
1762941600,Dubai
1762855200,The World's Greatest Art Museums
1762768800,The Taiping Rebellion
1762682400,Cracking the Enigma Code (Encore)
1762596000,Kaliningrad
1762509600,The Year 1950
1762423200,Compound Interest (Encore)
1762336800,The Sinking of the Lusitania
1762250400,The 1969 Sino-Soviet Border Conflict
1762164000,The Origins of the Federal Reserve
1762077600,The Dominican Republic
1761987600,Questions and Answers: Volume 36
1761901200,Pumpkins
1761814800,The Eastern Front of World War I
1761728400,Zombies (Encore)
1761642000,Black Tuesday and the 1929 Stock Market Crash (Encore)
1761555600,Challenger Deep and the Mariana Trench
1761469200,The Shroud of Turin
1761382800,The Winter War
1761296400,The History of NATO
1761210000,The 1989 Romanian Revolution
1761123600,The Younger Dryas
1761037200,Popcorn
1760950800,Starship Update
1760864400,Napoleon’s 100 Days (Encore)
1760778000,The Cultural Revolution
1760691600,Margarine
1760605200,The Zodiac Killer
1760518800,The Battle of Actium
1760432400,The 2025 Nobel Prizes
1760346000,The Year 1925
1760259600,Prohibition (Encore)
1760173200,FBI Behavioral Analysis Unit 
1760086800,The Wilhelm Scream
1760000400,The History of Personal Computing
1759914000,The Gateway Arch
1759827600,Bhutan
1759741200,Top-Level Domain Names
1759654800,Gemstones (Encore)
1759568400,The Six Cradles of Civilization
1759482000,The Louisiana Purchase
1759395600,The Wannsee Conference
1759309200,Questions and Answers: Volume 35
1759222800,Classical Music 101
1759136400,Cannons and Artillery
1759050000,John Brown
1758963600,The Law of the Sea (Encore)
1758877200,A History of Soap and Detergent
1758790800,King Leopold and the Congo Free State
1758704400,German POWs in America
1758618000,The Washington Monument
1758531600,The Velvet Revolution and The Velvet Divorce
1758445200,The 1970 Ancash Earthquake
1758358800,The Domestication of Sheep
1758272400,The Origins of the Vietnam War (Encore)
1758186000,The Year 1900
1758099600,The Black Dahlia
1758013200,Dendrochronology
1757926800,Star Wars
1757840400,The Arctic and the North Pole
1757754000,Hannibal Barca and the Second Punic War
1757667600,The Never Ending Voyager Missions
1757581200,Leonardo da Vinci
1757494800,Uruguayan Air Force Flight 571
1757408400,The Long Telegram
1757322000,Six Degrees of Separation
1757235600,The Germ Theory of Disease (Encore)
1757149200,Hitler's Family
1757062800,The Lost Colony of Roanoke (Encore)
1756976400,Ivory Coast /Côte d'Ivoire 
1756890000, Names of Animal Groups
1756803600,Energy, Work, and Power
1756717200,Questions and Answers: Volume 34
1756630800,The Pseudo-Neros
1756544400,The Republic of Pirates
1756458000,The 1972 Munich Olympics Massacre
1756371600,Starlite: The Miracle That Never Was
1756285200,The Unabomber
1756198800,Francisco Macías Nguema
1756112400,Emperor Nero (Encore)
1756026000,European Exclaves
1755939600,The Spanish Inquisition 
1755853200,Cyprus
1755766800,The Invention of the Telephone (Encore)
1755680400,Rasputin
1755594000,Nuclear Power
1755507600,The Trail of Tears
1755421200,The 1956 Suez Crisis (Encore)
1755334800,Joan of Arc (Encore)
1755248400,The Whiskey Rebellion (Encore)
1755162000,Frequent Flyer Programs
1755075600,The Fibonacci Sequence and the Golden Ratio
1754989200,Amateur Radio
1754902800,The Bank of England
1754816400,Yellowstone National Park (Encore)
1754730000,The Soviet Bomb
1754643600,The Great Leap Forward
1754557200,The Banality of Evil
1754470800,The Dreyfus Affair
1754384400,The History of Cookbooks
1754298000,The Lost Legion
1754211600,The War of 1812 (Encore)
1754125200,Questions and Answers: Volume 33
1754038800,The Witness Protection Program
1753952400,Canned Food
1753866000,The Year 1850
1753779600,Captain Cook
1753693200,Zoroastrianism
1753606800,Qin Shi Huang: China’s First Emperor (Encore)
1753520400,Madagascar
1753434000,Roman Gods and Goddesses
1753347600,The Murder of Kitty Genovese
1753261200,The AK-47
1753174800,The Lisbon Regicide
1753088400,Holy Relics
1753002000,Air Conditioning (Encore)
1752915600,The Sinking of the Mignonette and Justified Cannibalism
1752829200,The Battle of Cajamarca (Encore)
1752742800,Australian Wildlife
1752656400,Costa Rica
1752570000,Wilhelm Canaris: Working Against the Nazis From the Inside
1752483600,The Storming of the Bastille 
1752397200,The Greatest Comebacks of All Time 
1752310800,The Fundamental Forces of Nature
1752224400,The Gulf of Tonkin Incident (Encore)
1752138000,The Haitian Revolution
1752051600,Fabergé Eggs
1751965200,Transistors 
1751878800,The Peloponnesian War
1751792400,Madame la Guillotine
1751706000,LEDs: Light Emitting Diodes (Encore)
1751619600,The Chinese Communist Revolution
1751533200,Michigan vs Ohio
1751446800,Questions and Answers: Volume 32
1751360400,Fifth Anniversary Episode
1751274000,Marcus Licinius Crassus
1751187600,Central Park (Encore)
1751101200,The Sinking of the MV Wilhelm Gustloff
1751014800,Undersea Fiber Optic Cables
1750928400,The Republic of Ghana
1750842000,Napoleon's Invasion of Russia
1750755600,Innovative Sports Strategies
1750669200,The French Army Mutinies of 1917
1750582800,Admiral Isoroku Yamamoto (Encore)
1750496400,The Great Locomotive Chase
1750410000,Grass and Lawns
1750323600,The Russian Revolution
1750237200,The History of Apples (Encore)
1750150800,Desalination
1750064400,Autogyros
1749978000,Transuranium Elements (Encore)
1749891600,Frederick Douglass
1749805200,Blue
1749718800,Operation Dragoon
1749632400,All About Hair
1749546000,The Year 1800
1749459600,How the Ancients Made Fire
1749373200,The History of Ice Hockey
1749286800,The History of Surgery
1749200400,The Eruption of Krakatoa (Encore)
1749114000,Macau
1749027600,Catherine the Great
1748941200,SONAR
1748854800,Alternate Forms of Space Travel (Encore)
1748768400,Questions and Answers: Volume 31
1748682000,The History of the Hamburger
1748595600,The Last Days and Death of Adolf Hitler
1748509200,Marco Polo
1748422800,The Bataan Death March
1748336400,Bonds and the Bond Market
1748250000,A History of Memorial Day (Redux)
1748163600,The Moons of Jupiter
1748077200,The First and Second Banks of the United States
1747990800,How Much Did Rome and Sub-Saharan Africa ... Each Other?
1747904400,The Channel Tunnel
1747818000,The History of Salt (Encore)
1747731600,"Honest" Jack Sheppard
1747645200,Emperor Diocletian
1747558800,Comets
1747472400,Aircraft Carriers (Encore)
1747386000,1775: The Start of the American Revolution
1747299600,The Norman Conquest
1747213200,Alcatraz
1747126800,The RMS Titanic
1747040400,Miyamoto Musashi (Encore)
1746954000,The Ancient Greek Olympics
1746867600,Dubrovnik
1746781200,The Third Amendment
1746694800,Seed. Oils
1746608400,The Battle of Tours (Encore)
1746522000,A Journey to the Center of the Earth
1746435600,Triple Crowns and Grand Slams
1746349200,A Brief History of Australia
1746262800,When Exactly Did the Roman Empire Fall? (Encore)
1746176400,The Isles of Scilly and the 350-Year War
1746090000,Questions and Answers: Volume 30
1746003600,The Bahamas
1745917200,Numbers Stations (Encore)
1745830800,Origins of the Internet
1745744400,The Battle of Vicksburg
1745658000,The History of Banks and Banking
1745571600,Calendar Reform
1745485200,Sherman’s March to the Sea (Encore)
1745398800,Sede Vacante and The Process of Papal Succession
1745312400,The Medici Family and Renaissance Florence
1745226000,The Battle of Marathon (Encore)
1745139600,Global Reserve Currencies and the Triffin Dilemma
1745053200,Biological Taxonomy and the Tree of Life
1744966800,The Search for Life Outside the Solar System
1744880400,Rare Earth Elements (Encore)
1744794000,The History of Wire
1744707600,The Occupation and Liberation of Paris
1744621200,Platinum, Palladium, and Rhodium: The Other Precious Metals
1744534800,Operation Barbarossa (Encore)
1744448400,All About Fiji
1744362000,The Ancient World Isn’t Done With Us (Live)
1744275600,The Greatest Nobel Prize Snubs
1744189200,A History of Lead (Encore)
1744102800,The Kuiper Belt and the Oort Cloud
1744016400,The History of the Guitar
1743930000,The Reign of Terror
1743843600,Open Source Software
1743757200,The History of Pasta (Encore)
1743670800,Mass Extinction Events
1743584400,Questions and Answers: Volume 29
1743498000,The Crimean War
1743411600,Attila the Hun (Encore)
1743325200,The Knuckleball
1743238800,The Scientific Method
1743152400,The Many, Many Invasions of Sicily
1743066000,The History of Military Ranks (Encore)
1742979600,Ramage’s Rampage
1742893200,Hildegard of Bingen
1742806800,The Columbian Exchange
1742720400,Cruciferous Vegetables (Encore)
1742634000,Marcus Aurelius: Emperor and Philosopher
1742547600,The History of Whaling
1742461200,Earth’s Magnetic Pole Reversals (Encore)
1742374800,March Madness
1742288400,Why is the Alphabet in Alphabetical Order?
1742202000,The Battle of Gettysburg
1742115600,The Invention of the Telephone
1742029200,Betamax vs. VHS (Encore)
1741942800,The Cardiff Giant
1741856400,Lunar Eclipses 
1741770000,The Crossbow
1741683600,Emperor Claudius (Encore)
1741597200,Messier Objects
1741510800,Primate and Global Cities
1741428000,Artificial Turf
1741341600,Hydropower
1741255200,The Maginot Line (Encore)
1741168800,The Underground Railroad
1741082400, Timor-Leste (East Timor)
1740996000,The Academy Awards
1740909600,The Year 1700
1740823200,Questions and Answers: Volume 28
2088311296,Nellie Bly (Encore)
2088224896,Economic Statistics
2088138496,Andalusia
2088052096,The Mexican-American War
2087965696,How the Dutch Reclaimed Land From the Sea
2087879296,The Tensho Embassy (Encore)
2087792896,The Greek Gods
2087706496,The Medal of Honor
2087620096,The MItford Sisters
2087533696,The Aswan High Dam
2087447296,The Battle of Gaugamela 
2087360896,Antimatter (Encore)
2087274496,The History of Poker: From Ancient ... Modern Tournaments
2087188096,Special Forces
2087101696,The St Valentines Day Massacre
2087015296,Spy Satellites
2086928896,Separated at Birth (Encore)
2086842496,The Falkland Islands
2086756096,The Trojan War (Encore)
2086669696,Natural Gas Explained: Past, Present, and Future
2086583296,The World's Next Countries
2086496896,Kim Philby and the Cambridge Five
2086410496,Route 66 (Encore)
2086324096,The Prime Meridian
2086237696,The Battle of Stalingrad
2086151296,The Origins and History of the Abolitionist Movement
2086064896,How Hawaii Became a State (Encore)
2085978496,Questions and Answers: Volume 27
1738317600,The Five Families and How Organized Crime Became Organized
1738231200,The OMG! Particle (Encore)
1738144800,The History of Soft Drinks
1738058400,444 Days: The Iran Hostage Crisis
1737972000,The Acoustic Kitty and Other Crazy CIA Plots
1737885600,Warrior Monks: The Story of the Knights Templar (Encore)
1737799200,VTOL: Vertical Take-Off and Landing Aircraft
1737712800,Malaria: The Disease That Shaped History
1737626400,The Maha Kumbh Mela Pilgrimage: The ... Religious Festival
1737540000,Performance Enhancing Drugs and Substances
1737453600,The Worst Day in Human History:  January 23, 1556
1737367200,Beijing Through the Ages: Exploring 3,000 Years of History 
1737280800,Presidential Inaugurations: The Peaceful ... Power (Encore)
1737194400,Operation Market Garden (Encore)
1737108000,Pyotr Ilyich Tchaikovsky and the 1812 Overture (Encore)
1737021600,Caesar, Pompey, Crassus: The First Triumvirate (Encore)
1736913600,Chasing the Impossible: The Enigma of ... Motion (Encore)
1736827200,Famine
1736740800,The Schlitz Mistake
1736654400,The History of the Tomato (Encore)
1736568000,Gnosticism
1736481600,The Ultraviolet Catastrophe and the ... Quantum Mechanics
1736395200,Fractals
1736308800,Hosting the Olympics
1736222400,The Canadian Parliament
1736136000,The Black Death (Encore)
1736049600,The Federal Bureau of Investigation
1735963200,The Vikings
1735876800,Lions
1735790400,The Periodic Table of the Elements (Encore)
1735704000,Questions and Answers: Volume 26
1735635600,New Year’s Traditions (Encore)
1735549200,Tokyo
1735462800,Game Shows
1735376400,The Siege of Tobruk
1735290000,The Geography of Canada
1735203600,Boxing Day (Encore)
1735117200,The Battle of Trenton
1735030800,The 1826 West Point Egg Nog Riot
1734944400,The Plum Pudding Riots and the Puritan War on Christmas
1734858000,The Opium Wars (Encore)
1734771600,How to Build a Colony on Mars
1734685200, The Late Bronze Age Collapse
1734598800,Superstitions
1734512400,Zone Rouge and the Iron Harvest (Encore)
1734426000,The Parthenon and the Acropolis of Athens
1734339600,Peanuts
1734253200,All About Sand
1734166800,Gunung Padang (Encore)
1734080400,Women's Suffrage
1733994000,Prisoners of War and the Geneva Conventions
1733907600,The Korean War
1733821200,The Silk Road (Encore)
1733734800,CDs, DVDs, and Blu Ray
1733648400,The Plans for a US/Canadian War
1733562000,The Julio-Claudian Dynasty
1733475600,Black Holes (Encore)
1733389200,The White House
1733302800,The Electrical Grid
1733216400,The War of the Roses
1733130000,The History of Tea (Encore)
1733043600,Questions and Answers: Volume 25
1732957200,Representative Riffs
1732870800,The Tyranny of the Rocket Equation (Encore)
1732784400,The North American Turkey (Encore)
1732698000,The Islamic Caliphates
1732611600,Fermat's Last Theorem
1732525200,Prisons and Jails
1732438800,The Panic of 1893 (Encore)
1732352400,The Election of 1788
1732266000,The Year 1600
1732179600,Multiple Births (Encore)
1732093200,California
1732006800,The History of the Bow and Arrow
1731920400,The Blitz
1731834000,Investing 101
1731747600,Citizenship
1731661200,The Magna Carta (Encore)
1731574800,The Nile River (Encore)
1731488400,The Bone Wars
1731402000,All About Butter
1731315600,Superman
1731229200,The Northwest Passage (Encore)
1731142800,The Roman Donut - LIVE!
1731056400,Origin of Words and Phrases: Nautical
1730970000,The Battle of the Little Big Horn
1730883600,The Election of 1864 (Encore)
1730797200, Project Habakkuk 
1730710800,The Surprising Origin of Monopoly (Encore)
1730624400,Squaring the Circle
1730534400,Questions and Answers: Volume 24
1730448000,The East Africa Rift (Encore)
1730361600,Werewolves
1730275200,Vampires
1730188800,Frankenstein
1730102400,Mummies
1730016000,Zombies
1729929600,Uncontacted Peoples (Encore)
1729843200,Lizzie Borden
1729756800,East and West Berlin
1729670400,Terraforming Mars
1729584000,The Mongol Invasions of Japan (Encore)
1729497600,Conflict of the Orders: Patrician vs Plebeian
1729411200,The Solar Cycle
1729324800,Compound Interest
1729238400,The History of Breakfast
1729152000,Michelangelo (Encore)
1729065600,Guam And The Northern Mariana Islands
1728979200,What Has the James Webb Space Telescope ... (So Far)?
1728892800,The History of Insurance (Encore)
1728806400,The Boxer Rebellion
1728720000,The Battle of the Bulge
1728633600,Rogue Waves