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Air pollution makes surprisingly good art supplies

Plumes of diesel exhaust contain a mixture of things both nasty and harmless. A lot of it, however, is carbon. Carbon can be useful and (as you might recall from school) is often jet black in color. Start-up Graviky has created an exhaust filter that…

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Air pollution makes surprisingly good art supplies

Plumes of diesel exhaust contain a mixture of things both nasty and harmless. A lot of it, however, is carbon. Carbon can be useful and (as you might recall from school) is often jet black in color. Start-up Graviky has created an exhaust filter that…

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