Horizontal cross sections cut through a trunk of a tree can tell us a little about the history of a tree in its own time ...

If you cut into a tree, as every grade-schooler learns, you’ll find a beautiful pattern of concentric rings, each one formed during a year of the tree’s life. But this wasn’t always the case.

Some of the wonders of modern medicine are technologies that enable doctors to look inside us without surgery. Now, the same principles are being applied to trees, which may end up benefiting some of ...