Humans rely on trees for oxygen and food, but also shade and beauty, creating a tension that imbues the relationship with meaning. Trees are part of every aspect of human life and are amply represented in literature, music and art. Farmer David "Mas" Masumoto, artist Jennifer Steinkamp and environmental studies professor Nadlini Nadkarni discuss the many facets of that connection in a panel moderated by Sierra Magazine editor Bob Sipchen at the Getty Center.