The need to bot sequester Carbon and reduce CO2 and transition to clean fuels or no fuels at all (electrify) is more urgent than ever. Luckily some breakthroughs will make it easier to do so, specifically the new option to use cathalysts to convert CO2 and H2 into long chain hydrocarbons.
An alloy is developed for the direct CO2 hydrogenation to jet-fuel-range hydrocarbons
Now to me the best bet to reduce CO2 in the atmosphere is to build floating solar farms that do this conversion with available water and CO2 on a massive scale. You can also of course do it in the dry african regions close to the ocean for water availability. This effort could power and pay for itself as it generates fuels for airplanes.
Part of the fuel however will have to be left unused, so it can not be integrated in the economy, it has to be ‘extraeconomic’. This to me has quite a large chance of succes. The fuel can be converted to plastics and/or pumped into the ground or made inaccesible in other ways.
Its only a matter of building the first solar/chemical plants needed. Maybe in Tunesia, Morocco or Lybia?