| 1. | Information and communication technologies for development | Wikipedia audio article | 5:49:27 | Vlog |
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| 2. | Internet censorship and surveillance by country | Wikipedia audio article | 4:30:15 | |
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| 3. | Methods of computing square roots | Wikipedia audio article | 3:08:07 | |
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| 4. | The Industrial Revolution | Wikipedia audio article | 2:53:55 | |
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| 5. | Socialist | Wikipedia audio article | 2:51:42 | |
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| 6. | Civil rights movement | Wikipedia audio article | 2:46:10 | |
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| 7. | Pope Francis | Wikipedia audio article | 2:27:20 | |
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| 8. | Ring (mathematics) | Wikipedia audio article | 2:24:02 | |
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| 9. | American Broadcasting Company (ABC) | Wikipedia audio article | 2:23:14 | |
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| 10. | Portugal | Wikipedia audio article | 2:22:42 | |
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| 11. | Portugal | Wikipedia audio article | 2:20:58 | |
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| 12. | Flight and expulsion of Germans | Wikipedia audio article | 2:19:20 | |
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| 13. | Global surveillance disclosures (2013–present) | Wikipedia audio article | 2:18:57 | |
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| 14. | Industrial Revolution | Wikipedia audio article | 2:18:25 | Vlog |
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| 15. | Ages of consent in the United States | Wikipedia audio article | Wikipedia audio article | 2:18:14 | |
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| 16. | Science and technology in Venezuela | Wikipedia audio article | 2:17:49 | Vlog |
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| 17. | Andalusia | Wikipedia audio article | 2:17:09 | |
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| 18. | Tax haven | Wikipedia audio article | 2:16:10 | |
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| 19. | Timeline of United States inventions (1946–91) | Wikipedia audio article | 2:13:59 | |
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| 20. | Complex numbers | Wikipedia audio article | 2:13:11 | |
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| 21. | Lithuania | Wikipedia audio article | 2:11:43 | |
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| 22. | Literacy | Wikipedia audio article | 2:11:15 | |
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| 23. | Television in the United States | Wikipedia audio article | 2:09:13 | |
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| 24. | GPS | Wikipedia audio article | 2:08:59 | |
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| 25. | Spain | Wikipedia audio article | 2:07:14 | |
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| 26. | Defense industry of Turkey | Wikipedia audio article | 2:05:45 | |
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| 27. | Formula One World Championship | Wikipedia audio article | 2:03:12 | |
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| 28. | Methodist | Wikipedia audio article | 2:02:40 | |
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| 29. | History of American newspapers | Wikipedia audio article | 2:01:47 | |
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| 30. | Cuba during World War I | Wikipedia audio article | 2:00:53 | |
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| 31. | Malaysia Airlines Flight 370 | Wikipedia audio article | 2:00:34 | |
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| 32. | Women in science | Wikipedia audio article | 1:59:39 | |
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| 33. | Education in the United States | Wikipedia audio article | 1:58:57 | |
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| 34. | Advaita Vedanta | Wikipedia audio article | 1:58:34 | |
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| 35. | Closed subscheme | Wikipedia audio article | 1:57:38 | |
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| 36. | Horror film | Wikipedia audio article | 1:57:15 | |
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| 37. | Hybrid electric | Wikipedia audio article | 1:56:20 | |
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| 38. | Sculpture | Wikipedia audio article | 1:53:53 | Let's Play |
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| 39. | Pittsburgh, Pennsylvania | Wikipedia audio article | 1:53:29 | |
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| 40. | Taylor's theorem | Wikipedia audio article | 1:53:28 | |
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| 41. | Ethiopia | Wikipedia audio article | 1:52:49 | |
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| 42. | British Raj | Wikipedia audio article | 1:51:51 | |
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| 43. | China | Wikipedia audio article | 1:51:28 | |
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| 44. | Rockwell Space Shuttle | Wikipedia audio article | 1:50:54 | |
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| 45. | Sanskrit | Wikipedia audio article | 1:50:53 | |
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| 46. | Colonial period of the Philippines | Wikipedia audio article | 1:49:56 | |
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| 47. | Dwight D. Eisenhower | Wikipedia audio article | 1:49:20 | |
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| 48. | American Revolutionary War | Wikipedia audio article | 1:49:06 | |
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| 49. | Headlight | Wikipedia audio article | 1:47:10 | |
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| 50. | Forcing (mathematics) | Wikipedia audio article | 1:46:59 | |
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| 51. | Socialist Party of America | Wikipedia audio article | 1:46:58 | |
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| 52. | Xing (Fullmetal Alchemist) | Wikipedia audio article | 1:46:57 | |
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| 53. | Yerevan | Wikipedia audio article | 1:46:46 | |
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| 54. | Protestant | Wikipedia audio article | 1:46:33 | |
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| 55. | Protestant | Wikipedia audio article | 1:46:33 | |
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| 56. | Iranian Revolution | Wikipedia audio article | 1:46:16 | |
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| 57. | Sociologist | Wikipedia audio article | 1:46:10 | Vlog |
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| 58. | Burma | Wikipedia audio article | 1:46:06 | |
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| 59. | Characters of Fullmetal Alchemist | Wikipedia audio article | 1:45:58 | |
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| 60. | Sigmund Freud | Wikipedia audio article | 1:45:29 | |
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| 61. | Strategic bombing during World War II | Wikipedia audio article | 1:45:03 | |
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| 62. | Finland | Wikipedia audio article | 1:44:59 | |
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| 63. | Economy of the United States | Wikipedia audio article | 1:44:50 | |
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| 64. | Function (mathematics) | Wikipedia audio article | 1:44:34 | |
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| 65. | Technological and industrial history of the People's Republic of China | Wikipedia audio article | 1:44:34 | Vlog |
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| 66. | Slavery | Wikipedia audio article | 1:44:08 | |
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| 67. | Age of Enlightenment | Wikipedia audio article | 1:43:05 | |
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| 68. | LGBT rights in the United States | Wikipedia audio article | 1:42:31 | |
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| 69. | Abiogenesis | Wikipedia audio article | 1:42:18 | |
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| 70. | Videoconferencing | Wikipedia audio article | 1:41:48 | |
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| 71. | Assyria | Wikipedia audio article | 1:41:32 | |
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| 72. | French Enlightenment | Wikipedia audio article | 1:40:34 | |
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| 73. | Estonia | Wikipedia audio article | 1:40:07 | |
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| 74. | Louisiana | Wikipedia audio article | 1:39:49 | |
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| 75. | North Macedonia | Wikipedia audio article | 1:39:21 | |
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| 76. | Counterculture of the 1960s | Wikipedia audio article | 1:39:16 | |
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| 77. | Istanbul | Wikipedia audio article | 1:38:52 | |
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| 78. | Mathematical function | Wikipedia audio article | 1:38:16 | |
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| 79. | Easter Rising | Wikipedia audio article | 1:38:11 | |
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| 80. | Origin of the domestic dog | Wikipedia audio article | 1:38:03 | |
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| 81. | Slavic Native Faith | Wikipedia audio article | 1:37:44 | |
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| 82. | Sardinia | Wikipedia audio article | 1:37:13 | |
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| 83. | UK company law | Wikipedia audio article | 1:37:09 | |
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| 84. | Pentecostalism | Wikipedia audio article | 1:37:06 | |
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| 85. | Bayt al-Muqaddas | Wikipedia audio article | 1:36:48 | |
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| 86. | Indigenous Australians | Wikipedia audio article | 1:36:29 | |
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| 87. | Philadelphia, Pennsylvania | Wikipedia audio article | 1:36:27 | Let's Play |
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| 88. | Heart | Wikipedia audio article | 1:36:16 | |
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| 89. | Kerala | Wikipedia audio article | 1:35:35 | |
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| 90. | Zürich | Wikipedia audio article | 1:35:12 | |
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| 91. | The General Theory of Employment, Interest and Money | Wikipedia audio article | 1:35:11 | |
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| 92. | Famine | Wikipedia audio article | 1:34:58 | |
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| 93. | Cambrian explosion | Wikipedia audio article | 1:34:36 | |
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| 94. | List of Baroque composers | Wikipedia audio article | 1:34:33 | |
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| 95. | Edmonton | Wikipedia audio article | 1:34:22 | |
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| 96. | Physical violence | Wikipedia audio article | 1:33:49 | |
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| 97. | United Kingdom company law | Wikipedia audio article | 1:33:49 | |
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| 98. | Kerala | Wikipedia audio article | 1:33:47 | |
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| 99. | Routhian mechanics | Wikipedia audio article | 1:33:46 | |
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| 100. | Affirmative action in the United States | Wikipedia audio article | 1:33:26 | |
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