| Title | Comment | Keywords |
|---|---|---|
| Theory Rejected | 07:13 - 08:04 (00:51) / 0.5 MB | "Gary Ernst", "Alfred Wegener", "continental drift", "centrifugal force", "Earth's rotation", tide, Moon, Sun, geophysicist |
| Ice Ages | 12:48 - 14:04 (01:16) / 1.3 MB | "J. Lawford Anderson", glacier, "glacial ice", "glacial cycle", "geologic time", "Earth's orbit", Sun, "Earth's rotation", "global cooling" |