 |  | | What's this episode all about? Find out what mysteries will be revealed. Includes air dates. | |
 | | Ice Core analysis, Tree Ring analysis, and carbon-14 Dating are all methodsused by scientists to peer into the world of the distant past. Learn how these methods work and how they helped corroborate the evidence presented in this episode. | |
 | | What if your weatherman could tell you what the weather was like a hundred years ago? How about a thousand years ago? Tree ring analysis can do just that. View video clips of an interview with a tree ring expert. Learn the process of tree ring analysis -- how samples are gathered in the field and how they are analyzed in the lab. | |
 | | Get additional web links and book resources for further exploration and study. | |
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