This is without doubt one of the most amazing graffiti videos I've ever seen. The Italian graffiti artist Blu's innovative approach to the medium of wall art challenges traditional understanding of the possibilities in the realm public art whether sanctioned or not. In this new work Big Bang Big Boom, not only does Blu challenge the limits of the wall by morphing his visuals into enlivened physical objects, he also has mobilised the medium for creative reflection on science and education, playfully exploring a version of evolution.