"it costs the firm between $500 and $600 to remove a metric ton of CO₂ from the air" Ricke et alia center their cost-of-carbon estimates at $417: https://www.n

"it costs the firm between $500 and $600 to remove a metric ton of CO₂ from the air" Ricke et alia center their cost-of-carbon estimates at $417: https://www.nature.com/articles/s41558-018-0282-y https://www.nature.com/articles/s41558-018-0282-y . Climeworks is already very close.