Wow! Soon you can print with your car

Kaalink pen can collect enough carbon to produce one fluid ounce of ink, enough to fill a pen, in about 45 minutes.
Delhi-based former MIT Media Lab student Anirudh Sharma along with colleague Nikhil Kaushik has designed a soot trap that fits over the exhaust pipes of vehicles and generates pen inks. They call it Kaalink (Hindi play word for the colour black), which can collect up to 95 per cent of the pollutants emitted from a tailpipe. This is enough to produce one fluid ounce of ink.

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