Architect James Richärd, who remembers grade-school trips to the University of Arizona's giant tree-ring specimens, has designed a $12 million "treehouse" to display them. The new building, mostly ...

The archive building will be the first new facility for the tree-ring lab, which has spent its entire 70-year history in offices and research space crammed underneath the west side of the football ...

Tom Swetnam, the director of the Arizona tree-ring lab, grew up with wildfire. His father was a forest ranger in northern New Mexico, and after Swetnam graduated from college in the late 1970s, he ...