Between year 1990 to 2005, the global forest was shrinking at a rate of 13 million hectares per year (Greenfacts，2005). Ten years later, the earth is much crowded while the forest is scarcer. Maybe in the next 100 years, human will be on the journey to collonise another planet.
Scottish artist Katie Paterson has spent three years searching tree species around the world. She collected 10,000 tree species that are either extinct or still alive. Each piece of tree has unique colour and pattern. A simple display of the collection would be amazingly impressive. Through collaborations with architects Zeller & Moye, these 10,000 samples of tree species have been transformed into Hollow, an artwork that reflects the shared origin between universe and tree. The most ancient trees become the foundation of Hollow; at the pinnacle of the structure lies the extinct and scarce trees.
Hollow 坐落于英国布里斯托尔大学校内，将永久免费对公众开放参观 （组团去打坐了喂）。
Hollow is located at the University of Bristol and will be free for public to visit (perfect space for group meditation).
Meanwhile the University of Bristol is running a project the Tree Bank with other organizations. It invites everyone to upload sounds, photos and memories about trees and aims to set up a permanent tree bank.