Researcher Demonstrates How to Suck Carbon from the Air, Make Stuff from It

Here's some reason for hope in reversing climate change:

https://www.technologyreview.com/s/540706/researcher-demonstrates-how-to-suck-carbon-from-the-air-make-stuff-from-it/

"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."

But there are some problems with the process:

https://www.technologyreview.com/s/531346/can-sucking-co2-out-of-the-atmosphere-really-work/