Science Nation - Lord of the Tree Rings

submitted by: nsf
David Stahle travels to ancient forests around the world, collecting tree rings to learn more about major climate and historical events dating back hundreds and thousands of years. With help from the National Science Foundation, he uses Dendrochronology, or tree-ring dating, to get a snapshot of climate change over time. Stahle can also determine things like the socioeconomic impact of droughts. In fact, in 1998, he made the front page of the New York Times with his discovery that drought...