http://www.youtube.com/watch?v=YfRXDbtkEi0&feature=youtu.be

The PACT crew travels to Clarkia, Idaho to unearth preserved leaves of a forest that last stood 15 million years ago. But what they also found was a group of botanists attempting to extract the oldest DNA samples ever recovered. Hosted by Dr. Chris Martine of Bucknell University, with guest experts Drs. Bill Rember and Dave Tank of the University of Idaho.