Paris based artist and researcher Lia Giraud has created this green portrait. Nothing special you might think, until you realize it is alive: the green goo consist of microscopic algae.
The creation process is as follows: first algae are placed in a petri dish full of chemical nutrients. The algae are then exposed to an image and they will react to the light and form solids of different densities, forming an image. The procedure is very similar to a classic photo development, although this technique takes over four days to give life to the portrait.
When you don't like your picture, you can just put it in the sun and it will turn into a beautiful even shade of green.