There is no chance of removing existing CO2 from Air to make any sort of difference. There is no chance of meaningfully reducing CO2 emissions, because outside of Nuclear (and hydro/geothermal but only if you have the geography for it) there is no alternative to replacing fossil fuels. At some point the public will realize the lie of solar/wind as a replacement. We lost 50 years of greatly reduced emissions had nucle…
The surest solution to the problem is to keep using fossil fuels. That will lead to a desertification of the tropics, acidification of the oceans, and the death of about 5 billion people. Eventually, over the next 5-10,000 years, maybe 1-2 billion humans can sustain themselves on Earth near the poles and they won't have the opportunity re-industrialize on mined hydrocarbons because we'll have used up all of it.