Reading the Tree Rings

Editorial photographer Greg Kahn specializes in finding the small details that reveal a larger theme in the stories that he shoots. One of his ongoing pursuits has been finding scenes and subjects that show the intersection of climate change, science, nature and people. That brought him to become fascinated with dendrochronology, which is the science of understanding a tree’s history through its rings (check out “History in the Rings,” an article in Nature Conservancy magazine ’s recent Issue...