Scientists have discovered that insects that bore into trees as long ago as 90 million years, or as recently as last summer, leave a calling card that's rich with information. A University of ...

Is it frothy flux, bacterial wet wood, pitch from the pinon pitch mass borer, alcoholic flux, the result of boring insects, a fungal root problem, or the result of stress? All those conditions are ...

SOME 50 million years ago, an ant was foraging on a tree trunk growing on what is now the Baltic coast of Russia. A trickle of resin oozing from the tree trapped the insect, killing it and sealing it ...

High on Flagstaff Mountain, a ponderosa pine had quietly succumbed during the summer of 2020, but its green needles lingered another year to blanch in the fall of 2021. The tree was now conspicuous, ...