For the reasons mentioned below I'm skeptical that this is a solution to the climate problem. However, certain applications such as air travel do not currently

For the reasons mentioned below I'm skeptical that this is a solution to the climate problem. However, certain applications such as air travel do not currently have safe viable non-carbon power sources. Even if this is more expensive than fossil fuel, limited amounts of subsidized zero carbon fuel (~1-2% of consumption iirc) can make air travel sustainable. Best of luck.