The document describes Air-Ink, an ink made from captured air pollution. It discusses the process of using a Kaalink device to harvest soot from vehicle exhaust, then purifying it through proprietary methods to remove toxins and create various ink types. The Air-Ink aims to both reduce pollution and allow captured soot to be put to creative uses like artwork. It argues that widespread adoption of this process could meaningfully reduce global air pollution and its health impacts.