April 17, 2017 - 1:42 pm

We go outside to talk about the life force of trees.  The circulation of tons of fluid in them called the Cambium layer.  KBCS’s Yuko Kodama speaks with Seward Park Audubon Center lead naturalist Ed Dominguez.

Photo: Courtesy of David Marvin

Producers Yuko Kodama and Ruth Bly