Birds and trees are natural partners, but the Great Green Macaw and the Almendro Amarillo tree depend on each other for survival.

The connection between trees and puppetry goes back for centuries.

I recently took the train from Salt Lake City to California, my first such experience in decades. Each mile, my train passed over 3,000 railroad ties — nearly all of them made from trees.

With the holidays come evergreen wreaths on people's doors and windows — which got host Nalini Nadkarni asking: Where does all of this holiday greenery come from?

These two tree resins have a long human history, and these days are in danger of being over sourced.

Orchestras are full of wooden instruments, but the piece that unifies the group is the one that most of us forget about.

You've seen coconuts, but what about the giant — and wonky — double coconuts?

The first time I helped my mom make a pumpkin pie for our Thanksgiving dinner, my job was to retrieve the spaces for the filling. I knew what cinnamon and nutmeg were, but what in the world was allspice?

It's that time of year when nature goes all-in on leaf demolition. So, what's the process?

In the four decades that I've studied treetop biology, I've always focused on canopy-dwelling plants. But forests also support a fascinating array of arboreal animals.