| 1. | Riba | Wikipedia audio article | 2:42:46 | |
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| 2. | Steam locomotive | Wikipedia audio article | 2:24:06 | | Loco Motive
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| 3. | Treatise of Human Nature | Wikipedia audio article | 2:20:13 | |
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| 4. | Lyndon Johnson | Wikipedia audio article | 2:16:48 | |
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| 5. | Apple computers | Wikipedia audio article | 2:13:29 | |
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| 6. | Schrödinger equation | Wikipedia audio article | 2:12:15 | |
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| 7. | Pollution market | Wikipedia audio article | 2:11:25 | |
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| 8. | Theravada | Wikipedia audio article | 2:04:24 | |
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| 9. | Ireland | Wikipedia audio article | 2:02:52 | |
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| 10. | MTV | Wikipedia audio article | 2:02:20 | |
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| 11. | Apple Computer | Wikipedia audio article | 2:00:46 | |
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| 12. | History of the socialist movement in the United States | Wikipedia audio article | 1:56:52 | |
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| 13. | Sustainability | Wikipedia audio article | 1:56:32 | |
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| 14. | Petroleum electric hybrid vehicle | Wikipedia audio article | 1:55:08 | |
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| 15. | George Orwell | Wikipedia audio article | 1:54:10 | |
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| 16. | Critique of Pure Reason | Wikipedia audio article | 1:52:12 | |
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| 17. | Marine life | Wikipedia audio article | 1:49:00 | |
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| 18. | Sonora | Wikipedia audio article | 1:48:08 | |
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| 19. | People's Liberation Army | Wikipedia audio article | 1:47:06 | |
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| 20. | Reduced scheme | Wikipedia audio article | 1:46:24 | |
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| 21. | World Catholic Association for Communication | Wikipedia audio article | 1:46:12 | |
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| 22. | Global War on Terrorism | Wikipedia audio article | 1:44:18 | |
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| 23. | Abiogenesis | Wikipedia audio article | 1:43:40 | |
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| 24. | Grande Armée | Wikipedia audio article | 1:40:55 | |
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| 25. | List of military aircraft of the United States | Wikipedia audio article | 1:40:49 | |
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| 26. | Schutzstaffel | Wikipedia audio article | 1:40:42 | |
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| 27. | History of the United Kingdom during the First World War | Wikipedia audio article | 1:40:13 | |
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| 28. | Insurance company | Wikipedia audio article | 1:40:12 | |
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| 29. | Air National Guard of the United States | Wikipedia audio article | 1:40:07 | |
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| 30. | Christian Scientists | Wikipedia audio article | 1:39:31 | |
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| 31. | Islamism | Wikipedia audio article | 1:39:10 | |
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| 32. | Evolutionary history of plants | Wikipedia audio article | 1:37:05 | |
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| 33. | Jet bundle | Wikipedia audio article | 1:36:58 | |
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| 34. | Argentina | Wikipedia audio article | 1:36:45 | |
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| 35. | Philippines Campaign (1941–42) | Wikipedia audio article | 1:35:08 | |
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| 36. | Ethiopia | Wikipedia audio article | 1:34:50 | |
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| 37. | Specialty chemical | Wikipedia audio article | 1:34:41 | |
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| 38. | Rhetoric | Wikipedia audio article | 1:34:40 | |
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| 39. | Fascism | Wikipedia audio article | 1:34:34 | |
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| 40. | Technikon | Wikipedia audio article | 1:33:50 | |
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| 41. | Carlisle Indian Industrial School | Wikipedia audio article | 1:33:42 | |
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| 42. | Mikhail Gorbachev | Wikipedia audio article | 1:31:02 | |
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| 43. | Tight binding (physics) | Wikipedia audio article | 1:30:54 | |
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| 44. | Nondualism | Wikipedia audio article | 1:30:40 | |
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| 45. | Gallipoli Campaign | Wikipedia audio article | 1:29:36 | |
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| 46. | Vladimir Putin | Wikipedia audio article | 1:29:23 | |
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| 47. | Physical torture | Wikipedia audio article | 1:28:25 | |
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| 48. | Huguenot | Wikipedia audio article | 1:28:09 | |
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| 49. | Christ | Wikipedia audio article | 1:27:54 | |
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| 50. | Newton's theorem of revolving orbits | Wikipedia audio article | 1:27:49 | |
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| 51. | Chess | Wikipedia audio article | 1:27:41 | |
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| 52. | Lima | Wikipedia audio article | 1:25:47 | |
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| 53. | Kabbalah | Wikipedia audio article | 1:25:24 | |
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| 54. | Diesel–electric locomotive | Wikipedia audio article | 1:24:58 | | Loco Motive
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| 55. | Plate theory | Wikipedia audio article | 1:24:16 | |
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| 56. | Veracruz | Wikipedia audio article | 1:24:11 | | Vera Cruz
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| 57. | Canadian nationality law | Wikipedia audio article | 1:23:40 | |
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| 58. | Feminism | Wikipedia audio article | 1:22:53 | |
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| 59. | TRS-80 Color Computer | Wikipedia audio article | 1:22:38 | |
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| 60. | Origen | Wikipedia audio article | 1:22:29 | |
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| 61. | British South Africa Company | Wikipedia audio article | 1:22:23 | |
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| 62. | U.S. Environmental Protection Agency | Wikipedia audio article | 1:22:20 | |
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| 63. | Theory of mind | Wikipedia audio article | 1:22:20 | |
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| 64. | 2011 Christchurch earthquake | Wikipedia audio article | 1:22:04 | |
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| 65. | Baligh | Wikipedia audio article | 1:21:31 | |
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| 66. | Plug-in Hybrid Electric School Bus Project | Wikipedia audio article | 1:21:05 | |
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| 67. | Beijing | Wikipedia audio article | 1:20:57 | |
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| 68. | Work energy theorem | Wikipedia audio article | 1:20:34 | |
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| 69. | American Industrial Revolution | Wikipedia audio article | 1:20:29 | |
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| 70. | Kiev | Wikipedia audio article | 1:20:11 | |
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| 71. | Austria | Wikipedia audio article | 1:19:54 | |
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| 72. | First Sino-Japanese War | Wikipedia audio article | 1:19:33 | |
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| 73. | Binomial theorem | Wikipedia audio article | 1:19:22 | |
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| 74. | Organ transplantation | Wikipedia audio article | 1:18:56 | |
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| 75. | Electric transmission | Wikipedia audio article | 1:18:32 | |
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| 76. | Conscientious objection throughout the world | Wikipedia audio article | 1:18:32 | |
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| 77. | The Troubles | Wikipedia audio article | 1:18:18 | |
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| 78. | Nintendo Entertainment System technical specifications | Wikipedia audio article | 1:18:07 | |
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| 79. | Raleigh, North Carolina | Wikipedia audio article | 1:18:06 | |
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| 80. | Solar electricity | Wikipedia audio article | 1:18:06 | |
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| 81. | Laser light | Wikipedia audio article | 1:17:43 | |
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| 82. | Cyprus | Wikipedia audio article | 1:17:17 | |
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| 83. | Police | Wikipedia audio article | 1:17:09 | |
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| 84. | Michigan | Wikipedia audio article | 1:17:09 | |
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| 85. | Kanji | Wikipedia audio article | 1:17:00 | |
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| 86. | List of discontinued Volkswagen Group diesel engines | Wikipedia audio article | 1:16:57 | |
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| 87. | Utah | Wikipedia audio article | 1:16:25 | |
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| 88. | Traditional Chinese medicine | Wikipedia audio article | 1:16:22 | |
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| 89. | Greenwich Village | Wikipedia audio article | 1:15:56 | |
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| 90. | Mathematical descriptions of the electromagnetic field | Wikipedia audio article | 1:15:46 | |
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| 91. | Wetland | Wikipedia audio article | 1:15:45 | | Wetlands
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| 92. | Belarus | Wikipedia audio article | 1:15:44 | |
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| 93. | Cuisine of India | Wikipedia audio article | 1:15:39 | |
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| 94. | Electric transmission of energy | Wikipedia audio article | 1:15:20 | |
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| 95. | History of Georgia (country) | Wikipedia audio article | 1:14:22 | |
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| 96. | Cologne | Wikipedia audio article | 1:14:14 | |
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| 97. | Religious conflicts in India | Wikipedia audio article | 1:14:12 | |
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| 98. | YouTube | Wikipedia audio article | 1:14:04 | |
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| 99. | Science and technology in China | Wikipedia audio article | 1:13:47 | |
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| 100. | Galileo Galilei | Wikipedia audio article | 1:13:35 | |
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