By taking tree ring samples from thousands of trees around the West and determining how old each tree is and how many cycles of wet and dry each has been through, researchers are trying to create the clearest picture of climate in the West over the past several centuries and in turn, hopefully, an equally clear glimpse into the future. Jennifer Pemberton joined scientist Justin DeRose on a field trip to collect tree ring samples and sends this report. Listen to the story on Utah Public Radio.