Arborem Autotroph is a metallic tree that generates a sort of «artificial photosynthesis». In the ground surrounding the tree, there are solar panels that generate electricity to pump water from the bottom to the leaves on top. It makes tiny drops to fall suggesting the water cycle. By night the leaves are illuminated by fiber optics and leds using the stored energy generated during the day. The wind make the leaves to move while the sun is reflected emphasizing the movement.