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Aviation is large source of carbon emissions in the transportation sector. Researchers and entrepreneurs are developing alternatives to petroleum-derived jet fuel, with a lot of effort being directed toward hybrid-electric power, hydrogen, or so-called sustainable jet fuel (SAF) made from vegetable matter. No matter which alternative ultimately wins out, there will be a decade or more of a transition, which means we’ll be flying conventional jets using conventional fuel for some time.
But that doesn’t have to mean we’re stuck with the same level of emissions.
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