Turning Airborn Carbon Solid→

As for the technology’s emissions-cutting potential, the researchers are optimistic. They calculate that given an area less than 10 percent of the size of the Sahara Desert, the method could remove enough carbon dioxide to make global atmospheric levels return to preindustrial levels within 10 years, even if we keep emitting the greenhouse gas at a high rate during that period.

This article really reminds me of the root technology in Diamond Age.