We know how advertising works - they put it in our face, we think about it. Maybe more people will think about the environmental crisis, if we put it in their face? Sounds aggressive, but that's not at all how I mean it. I mean through street art. Picture this: a mural of a plastic bag, floating in the sea among the turtles. Melting ice sheets. A forest on fire. Get more people thinking -> get more people caring -> get more people pushing for action (and making micro changes in their lives that add up big when done by the masses).