Scientists and engineers have been underscoring for some time the need for carbon-capture technologies to help reverse the course of climate change. A solution of last resort, it relies on technology to strip the atmosphere of the most prevalent greenhouse gas — a process referred to as “direct air capture."
From National Geographic:
Keeping global warming to less than 2 degrees C (the international target to avoid the most dangerous impacts) will likely require “negative emissions”—some way of taking lots of CO2 out of the atmosphere and storing it permanently, according to the Intergovernmental Panel on Climate Change (IPCC).
Until now, the concept has remained elusive due to the exorbitant costs involved and few takers. But one Canadian company, Carbon Engineering, has been running a pilot facility since 2015 and says it has successfully developed a cost-effective technology for DAC.
National Geographic called it an "engineering breakthrough." The founders recently published a paper detailing the costs of the ambitious project in the journal Joule.
“Our paper shows the costs and engineering for a full-scale plant that could capture one million tons of CO2 a year,” David Keith, a physicist at Harvard University and founder of Carbon Engineering, told National Geographic.