Berea Midpark High School students are participating in a hands-on art conservation class as they prepare the district's mid-century-modern 'Tree of Knowledge' sculpture for reinstallation.

Installation view of Tiffany Shlain and Ken Goldberg, Ancient Wisdom for a Future Ecology: Trees, Time, and Technology at the Skirball Cultural Center, Los Angeles (all photos David S. Rubin ...

Joe Davis's latest artwork involves splicing the 50,000 most popular pages from Wikipedia into apple DNA to create a genetically modified Tree of Knowledge.