| Title | Comment | Keywords |
|---|---|---|
| Plate Tectonic Theory | 22:45 - 23:40 (00:55) / 1.6 MB | "James Sadd", "plate tectonics", atom, chemistry, "quantum mechanics", physics, gene, DNA, biology |
| Evolution | 07:24 - 08:22 (00:58) / 0.7 MB | "Jamie Webb", "sexual reproduction", cell, "asexual reproduction", clone, DNA, mutation |