The State of Our Lungs
This billboard was installed in February 2018 near the Old Madras Road metro station in Bangalore. The lungs are made out of HEPA filters (the same material used in air pollution masks). In just 2160 hours of exposure the filters had absorbed so much particulate matter that they turned jet black. This is what is happening to our lungs on a daily basis.
If you are exposed to 2 hours of air pollution in a city like Bangalore, it means your lungs could be like this in just 3 years!
The state of the lungs before the installation was taken down