What is it? A metal tree that is self-sufficient. It generates its own energy to stay alive and in balance with its surroundings. It’s a tree that collects your secrets and wishes and melodically shares them with visitors of the park. You can share your secrets and wishes in several ways: via Twitter or add them directly to the tree.
The tree interacts with its environment. Depending on the number of people surrounding it, it will turn its volume up or down. It will also react to its remaining energy level, generated by solar power.[accordion]
For more see: http://www.depopulair.nl and http://waag.org/en/project/de-populair-twitter-tree