Air pollution remains an unseen global killer – with nearly 6.5 million deaths a year attributed to pollution we breathe every day – that's four times the amount of people killed on the world's roads, according to The Guardian. In fact, in the U.K. alone, high levels of NO2 cause more than 60 premature deaths a day. Now, one company is harnessing its passive advertising to help reduce that number – not only transforming a static image into a NO2 trapping powerhouse, but also raising awareness of an important new technology.