8.14 avg 8 episodes 8.0 → 8.3 45 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Is There a Creator? | 8.0 | 390 |
| 2 | The Riddle of Black Holes | 8.3 | 288 |
| 3 | Is Time Travel Possible? | 8.2 | 280 |
| 4 | What Happened Before the Beginning? | 8.3 | 258 |
| 5 | How Did We Get Here? | 8.0 | 220 |
| 6 | Are We Alone? | 7.9 | 223 |
| 7 | What Are We Really Made Of? | 8.1 | 208 |
| 8 | Beyond the Darkness | 8.3 | 210 |
7.82 avg 10 episodes 7.6 → 7.5 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Is There Life After Death? | 7.6 | 201 |
| 2 | Is There an Edge to the Universe? | 8.2 | 181 |
| 3 | Does Time Really Exist? | 8.2 | 190 |
| 4 | Are There More Than 3 Dimensions? | 7.8 | 156 |
| 5 | Is There a Sixth Sense? | 7.6 | 162 |
| 6 | Are There Parallel Universes? | 7.9 | 157 |
| 7 | How Does the Universe Work? | 7.8 | 143 |
| 8 | Can We Travel Faster Than Light? | 8.0 | 155 |
| 9 | Can We Live Forever? | 7.6 | 159 |
| 10 | What Do Aliens Look Like? | 7.5 | 141 |
7.30 avg 10 episodes 7.3 → 7.5 45 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Will We Survive First Contact? | 7.3 | 140 |
| 2 | Is There a Superior Race? | 7.3 | 134 |
| 3 | Is the Universe Alive? | 7.1 | 129 |
| 4 | What Makes Us Who We Are? | 7.2 | 118 |
| 5 | What Is Nothing? | 7.3 | 117 |
| 6 | Can We Resurrect the Dead? | 7.3 | 111 |
| 7 | Can We Eliminate Evil? | 7.4 | 103 |
| 8 | Mysteries of the Subconscious | 7.4 | 117 |
| 9 | Will Eternity End? | 7.2 | 106 |
| 10 | Did We Invent God? | 7.5 | 126 |
7.50 avg 10 episodes 7.8 → 7.0 44 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Is There a God Particle? | 7.8 | 118 |
| 2 | When Does Life Begin? | 7.5 | 101 |
| 3 | Can We Survive the Death of the Sun? | 7.5 | 102 |
| 4 | How Do Aliens Think | 7.5 | 97 |
| 5 | Will Sex Become Extinct? | 7.3 | 87 |
| 6 | Can Our Minds Be Hacked? | 7.3 | 95 |
| 7 | Are Robots the Future of Human Evolution? | 8.1 | 106 |
| 8 | Is Reality Real? | 7.7 | 108 |
| 9 | Do We Have Free Will? | 7.3 | 96 |
| 10 | Did God Create Evolution | 7.0 | 86 |
7.38 avg 10 episodes 7.4 → 7.7 43 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Is God an Alien Concept? | 7.4 | 104 |
| 2 | Is Luck Real? | 7.7 | 92 |
| 3 | Is Poverty Genetic? | 7.0 | 90 |
| 4 | How to Collapse a Superpower | 7.4 | 84 |
| 5 | Does the Ocean Think? | 7.3 | 85 |
| 6 | Is a Zombie Apocalypse Possible? | 7.2 | 81 |
| 7 | Is Gravity an Illusion? | 7.5 | 81 |
| 8 | Will We Become God? | 7.1 | 77 |
| 9 | Is There a Shadow Universe? | 7.5 | 83 |
| 10 | When Did Time Begin? | 7.7 | 88 |
7.28 avg 6 episodes 7.6 → 7.2 43 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Are We All Bigots? | 7.6 | 91 |
| 2 | Can Time Go Backwards? | 7.3 | 82 |
| 3 | Are We Here for a Reason? | 7.3 | 77 |
| 4 | Do We Live in the Matrix? | 7.4 | 79 |
| 5 | Are Aliens Inside Us? | 6.9 | 71 |
| 6 | Why Do We Lie? | 7.2 | 79 |
7.28 avg 4 episodes 7.0 → 7.5 43 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | What Makes a Terrorist? | 7.0 | 66 |
| 2 | Is Privacy Dead? | 7.5 | 65 |
| 3 | Are There More Than Two Sexes? | 7.1 | 50 |
| 4 | Can We All Become Geniuses | 7.5 | 52 |
7.30 avg 4 episodes 7.5 → 6.7 43 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Is the Force with Us? | 7.5 | 60 |
| 2 | Can We Cheat Death? | 7.2 | 56 |
| 3 | Can We Hack the Planet? | 7.8 | 51 |
| 4 | Is Gun Crime a Virus? | 6.7 | 67 |
