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by qfiard 1021 days ago
Synthetic kerosene was the hint. You can make carbon neutral kerosene in the same way as biofuel, it doesn't add greenhouse gases to the atmosphere since the carbon it contains was captured from the atmosphere. Not a perfect solution as it doesn't solve the impact of contrails and there is the problem of how to generate so much biofuel, but it is a valid way to decarbonize flying.