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Using sustainable aviation fuels could reduce emissions by up to 80%, scientists find
(www.manchester.ac.uk)
This is a most excellent place for technology news and articles.
This is a huuuge load of crap. Nowhere does this clearly say that CO2 emissions are cut by 80%, just "ultrafine black carbon" which is a pollutant more than a greenhouse gas. Aviations worst impact is by far the greenhouse gases.
The "sustainable fuel" that is so mysteriously alluded to, turns out to be made from "renewable biomass". Plant-basid fuels have been around for a while, usually as a greenwashing stunt by industries that consume a lot of fossil fuels. The amount of farmland needed to produce even a small fraction of what's needed in aviation is astronomical. Approaching 9 billion eaters, we can't afford to make food vs fuel a debate (again).
This whole article reads like it was written by the aviation company that paid for the research in the first place. This isn't science, it's propaganda.
Even if this was true, that wouldn't lead to less emissions but just more flights.
As we can see, every time the efficiency increases, the flight price drops, and the number of flights increases. So, it just allows us to fly more for the same amount of C02.