German artist Gunnar Green has made an interesting project in using plants and bacteria in modern art. He worked in Berlin and the scientists were really sceptical about the idea.After whole series of experiments, the artist stopped at the thought of making letters and words, using live organisms.For instance, one of his objects represents sor of an acquarium, where algae slowly forms letters. Another his invention is soap-like material, which contains E.coli bacteria. If holding the object in warmth, bacteria multiplyand form letters. More of Green's works