It's also reusable. After capturing carbon, the material also gives it up easily so it can be sequestered or recycled through the manufacture of other substances. The polyethylenimine material can then also be reused over and over again to capture more carbon dioxide. Used to line smokestacks or even out in the open atmosphere, the material could blunt the impact of all of those things we humans do that are contributing to the carbon glut in the atmosphere.