Atmospheric CO2 will linger in the atmosphere for several millennia [1]. Not all of it, of course, but a large enough amount to matter for many, many generation

Atmospheric CO2 will linger in the atmosphere for several millennia [1]. Not all of it, of course, but a large enough amount to matter for many, many generations to come. [1] https://www.nature.com/articles/climate.2008.122 https://www.nature.com/articles/climate.2008.122