The guy who discovered the truth about tree rings

There are some science facts so ubiquitous that it takes a while to realize that, oh yes, someone actually discovered that. Anyone who went to a state park, or looked down at a freshly-sawed stump, has held their parents' hands and heard how you can tell about the life of a tree by studying its rings. Now meet the guy… » 2/15/13 5:00pm 2/15/13 5:00pm

Using Tree Rings to Determine the Start of the Medieval Dark Ages

The science of dendrochronology observes changes in the pattern of tree rings in an attempt to create a time line and infer climate changes. Using tree ring data, it is possible to link the past 11,000 years in parts of Germany & Northern Ireland, but only the past few centuries in other parts of the world. » 2/10/12 7:00am 2/10/12 7:00am