An arborist, forester and horticulturist stood before a towering white pine on a property north of Cadillac on Tuesday, ready ...

How do you determine the age of a tree? Just count the rings, of course! One ring equals one year of growth. If you’ve ever stumbled upon a tree stump you may have even done it yourself. But if you’re ...

ANGELES NATIONAL FOREST >> If trees could talk about the weather, Dave Meko would be out of a job. Meko, a professor from the University of Arizona Laboratory of Tree Ring Research, has made a career ...

Despite decades of industrial deposition, nitrogen availability in the boreal forest is steadily declining. In a new study ...

TREES HAVE STORIES to tell. Within their annual growth rings are records of drought and deluge, but scientists can also use them to reconstruct environmental pollution events. Tree rings can be used ...