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Using sustainable aviation fuels could reduce emissions by up to 80%, scientists find
(www.manchester.ac.uk)
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this post was submitted on 27 Oct 2023
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The use of biomass rather than fossil fuels, if it can be scaled up is carbon neutral. The biomass grows from CO2 in the atmosphere.
Yes this will take about 60% of our crop land to completely replace fossil fuels (including cars), but this is completely doable if we reduce grain production for livestock. Source: https://esa.org/biofuels/presentations/Auyeung_poster.pdf
More to the point, it's much more easily doable if we quit wasting hydrocarbon fuels on ground transportation by making our cities walkable and moving longer-range travel to electrified rail.