Build a Tree-Ring Timeline by Rick Groleau Assessing the age of a living tree is straightforward enough—just extract a core from the tree's circular trunk and count the number of lines in the ...

Exploration of the great outdoors includes a fascination with the trees around us — and here, an expert in tree-ring research reveals some of the details about what trees can tell us.

TUCSON — In the basement of the University of Arizona’s Laboratory of Tree-Ring Research, in a climate-controlled storage room that looks like a shrunken version of the one in the first ...

If you cut down a tree, you can read in the wood an environmental record. Now climate change is complicating the narrative. In a basement in Tucson, Ariz., slices of tree trunks stand on shelves ...