Although forests have many more other benefits like animal habitat, soil creation, local climate change, cloud generation, ..., a simpler, quicker and cheaper solution would be to invent artificial photosynthesizers (using solar light) or electrosynthesizers (using electricity) - huge installations that would absorb air like big vacuum cleaners, capture the CO2 and decompose the molecule into Carbon products. For example by employing such processes as Reduction of CO2: https://en.wikipedia.org/wiki/Electrochemical_reduction_of_c...

The only thing that's needed is to incentivize such research. Let's say creating a global fund of 20-30 Billion dollars and encouraging researchers to apply for grants from this fund.

Next step after basic research is done and something feasible invented would be to commercialize the solutions. However again here we would need incentives. It is really hard to implement the idea without commercial interest.

What would be a good incentive for this? Well, the captured carbon could be sold... Any other ideas?