The ink in this marker is made from car exhaust.
The ink in this marker is made from car exhaust.

Air-Ink Markers

The ink in this marker is made from car exhaust.
Kip Malone

Get full access to Outside Learn, our online education hub featuring in-depth fitness, nutrition, and adventure courses and more than 2,000 instructional videos when you sign up for Outside+.

Scientists from MIT have developed a filter that turns soot into ink. It attaches to the tailpipe of a car or diesel generator to collect the exhaust, which is then filtered and turned into the ink that fills these markers (starting at $35). About 45 minutes of exhaust will produce one ounce of ink. The markers come in various sizes, with tips ranging from two to 50 millimeters. 

Buy Now

promo logo
sms