Not just the CO₂ emissions of coal-based power generation damage people and environment but especially toxic substances that come with it. With our campaign signet, which transforms the campaign motto "Coal is toxic" into a visual statement, Greenpeace draws the public’s attention to this. In the visual connection of power plant and emission the dangers become strikingly evident. The signet is applicable in various ways, e.g. as info graph or on the street, and comes to live as interactive projection. Greenpeace activists quickly adopted it, creating their own interpretations and executions.