The world's first laboratory dedicated to tree-ring research now has a new home – after 75 years in "temporary quarters" under the UA's football stadium. To celebrate, the UA Laboratory of Tree-Ring Research hosted a public open house for the new Bryant Bannister Tree-Ring Building. The new facility, named for the laboratory's director emeritus, provides 17,300 square feet of usable space. (Photos by Patrick McArdle/UANews)