The Ledger
Every statement that passed quotation and attribution checks. Mix any filter with any other: certainty 1/5, debate potential 5/5, or both at once.
why aren't all 14 resolved? a statement only gets an assessment when the public record can support or contradict it. opinions and what-ifs never can, and 1 checkable ones are still open, waiting for their date. predictions held up or didn't; assertions are supported or contradicted. on every card: ▮▮▮▮▮ certainty · ▮▮▮▮▮ debate potential. speakers are clickable
Rutherford: Crop-based aviation biofuels can emit more lifecycle CO2 than fossil fuel
“You can actually produce sustainable aviation fuels that on a life cycle basis emit more carbon dioxide than the base jet fuel.”
Rutherford: Electric aviation is limited to flights of 300 kilometers or less
“But by our analysis, you know, it's really a market for commuter flights, and for flights of, you know, 300 kilometers or less for the foreseeable future, just because of the underlying mass penalties of the technology.”
Rutherford: SAFs will lead aviation decarbonization through 2040 before hydrogen potentially emerges
“You know, 2030, SAFs, definitely. 2040, I would also say SAFs. 20 50, it may shift to hydrogen.”
Rutherford: Total climate impact of flying is triple its CO2 alone
“So if you look at the total climate impact of flying, it's about Three times larger than carbon dioxide alone.”
Rutherford: Waste fats and oils can meet just 2% of fuel demand
“So we think overall maybe about two percent Of overall jet fuel use could be met by diverting these waste fogs from existing uses to aircraft.”
Rutherford: Airbus plans build/no-build decision on hydrogen planes in 2025
“They are planning to make a build, no build decision in 2025. So they're going to review the technologies between now and twenty-twenty-five, decide whether or not to build these planes, and then it becomes sort of a rush to mature and deploy all the technolog…”
Rutherford: Supersonic aircraft are 5 to 7 times more carbon intensive than subsonics
“Overall, you know, the estimate is that the aircraft themselves will be about five to seven times as carbon intensive as comparable subsonic designs.”
Rutherford: 50% of Americans and 90% of humanity do not fly annually
“Half of the United States doesn't fly in a, in any given year, and about 90% of the world doesn't get on a plane in any given year.”
Rutherford: Aviation emissions could triple by 2050 without intervention
“And by some accounts, overall emissions could triple by mid-century unless additional action is taken to reduce the pollution.”
Rutherford: Aviation emissions accelerated after the airline industry's 2009 climate pledge
“If you look what happened after that goal was announced, emissions actually increased faster in the decade after they announced the goal than in the decade before it. So that goal that was first announced had literally no impact the emissions trajectory and ve…”
Rutherford: Sustainable aviation fuel accounts for less than 0.1% of global use
“Current uptake is very, very small. It's less than .one percent of global jet fuel use.”
Rutherford: Two-thirds of aviation CO2 emissions come from flights under 4,000 km
“About two-thirds of overall CO₂ emissions from aviation occur at 4000 kilometers or less.”