Pencils - Ink

As the economy progresses, it also brings a lot of burdens to the environment, such as car exhaust pollution. The researchers have to wonder about how people can reuse pollution. The "AIR-INK" is designed by "Graviky Labs." 

"AIR-INK is the first grade of materials made entirely out of carbon emissions. After capturing carbon-rich emissions through pilot trials of KAALINK™ and several other pollution sources, the researchers re-purpose carbon-rich pollutants into tools for art. 

http://www.graviky.com/air-inktrade.html