| | Views | Cover | Author | Title | Published | Format | Updated | Thank_to |
| 2047997 | 72 |  | no autor | Unsolved: True Canadian Cold Cases | 2021 | epub | 1/30/2023 12:32:16 AM | maveriks |
| 2041749 | 82 |  | no autor | What is Real?: Space Time Singularities or Quantum Black Holes?Dark Matter or Planck Mass Particles? General Relativity or Quantum Gravity? Volume or ... (Solutions to the Unsolved Physics Problems) | 2021 | epub | 12/26/2022 8:26:26 PM | alex21s |
| 2038577 | 31 |  | LJ Roberts | Have You Seen This Person?: Ten Unsolved Disappearances, 2000-2013 | 2021 | epub | 12/8/2022 4:45:12 PM | eternal |
| 2035754 | 40 |  | David Hone (Author), Tom Lawrence (Narrator), Princeton University Press (Publisher) | How Fast Did T. Rex Run?: Unsolved Questions from the Frontiers of Dinosaur Science [Audiobook] | 2022 | M4B | 11/20/2022 10:40:33 AM | comet |
| 2032551 | 100 |  | no autor | Ballad of the Green Beret: The Life and Wars of Staff Sergeant Barry Sadler from the Vietnam War and Pop Stardom to Murder and an Unsolved, Violent Death | 2021 | epub | 10/30/2022 6:48:49 PM | topron |
| 2025195 | 90 |  | Tobin Gilman | The McGlincy Killings in Campbell, California: An 1896 Unsolved Mystery (True Crime) | 2021 | epub | 9/16/2022 12:37:04 AM | eternal |
| 2020204 | 405 |  | David Hone | How Fast Did T. rex Run?: Unsolved Questions from the Frontiers of Dinosaur Science | 2021 | epub | 8/11/2022 7:45:14 AM | eternal |
| 2006742 | 420 |  | John Malone | Unsolved Mysteries of Science: A Mind-Expanding Journey through a Universe of Big Bangs, Particle Waves, and Other Perplexing Concepts | 2021 | pdf | 6/1/2022 7:08:11 AM | maveriks |
| 1994935 | 197 |  | Florentin Smarandache | Definitions, Solved and Unsolved Problems, Conjectures, and Theorems in Number Theory and Geometry | 2021 | pdf | 4/2/2022 9:10:24 AM | maveriks |
| 1992287 | 422 |  | no autor | See, Solve, Scale: How Anyone Can Turn an Unsolved Problem into a Breakthrough Success | 2021 | epub | 3/23/2022 6:10:56 AM | maveriks |
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