From toxic to treasure: Indian firm turns air pollution into ink

Bengaluru-based company, Graviky Labs has found an innovative way to turn air pollution into usable ink. Air Ink captures pollutants directly from the source with the help of a device called KAALINK inserted into pipes of vehicles or generators. The soot collected is treated through various stages and used to make safe ink and paints. The product is currently available in the form of markers.