| Title | Comment | Keywords |
|---|---|---|
| Ice Core Analysis | 21:09 - 22:12 (01:03) / 1.5 MB | "Greenland Ice Core Program", Greenland, "ice core", "State University of New York - Buffalo", "gas composition", glacier, "glacial ice", nitrogen, oxygen, atmosphere, "Greenhouse Effect", methane, "carbon dioxide", "Ice Age", "biological activity" |