This image of a graffiti-d wall, and a slumped figure against it, is familiar from the centre of dozens of major cities around the world. While this makes the image identifiable, the illuminated mask shows the (otherwise invisible) dirty air that is sadly also a feature of many city centres.
WHAT IT SHOWS: 23 year old radio-television student Enes İshak Ordueri wears an LED light mask for the Unmask My City campaign in a back alley in Galata, Istanbul. The mask changes colour dynamically, according to real time measurements of local air pollution and according to Air Quality Index standards for PM2.5 levels. Here it is lit up yellow, showing pollution is roughly double World Health Organization recommended limits, and a potential risk for sensitive groups.