In 2017 alone, humans released ~32.5 gigatons of CO2 into the atmosphere. CO2 emissions from humans have two major effects: global warming and ocean acidification. Even if man-made carbon emissions ended today, the CO2 in our atmosphere would persist for thousands of years because the natural processes that absorb CO2 simply cannot sink the CO2 fast enough. Additionally, current carbon sink technology is not economically feasible and would cost trillions of dollars at modest estimates.
