Category
Transportation
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Targeting sustainable aviation fuel at a handful of major airports could deliver outsized climate and health benefits, new CATF analysis finds
Directing sustainable aviation fuel to a small number of high-impact airports, rather than spreading it across the aviation network, could significantly increase the fuel’s climate and public health benefits while global supply continues to build.
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Failure to adopt Net Zero Framework delays progress on global shipping decarbonization
Today, negotiations at the International Maritime Organization (IMO) failed to reach agreement on the Net-Zero Framework, a policy designed to align global shipping with climate goals and accelerate the transition to cleaner fuels. The outcome represents a setback for maritime decarbonization efforts and underscores the need for renewed commitment to…
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H.R. 1 expands 45Z clean fuel production credit for conventional biofuels while cutting sustainable aviation fuel tax credit
H.R. 1, the so-called “One Big Beautiful Bill” Act (OBBBA), enacted on July 4, 2025, expands the 45Z Clean Fuel Production Credit (45Z) by extending it through 2029 and loosening eligibility requirements associated with transportation fuels’ carbon intensity (CI). Simultaneously, amendments to the 45Z credit within H.R. 1 dramatically reduce…
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The 45Z clean fuel production tax credit is being used for unjustified giveaways to the conventional biofuels industry. The Senate should stop it.
The Senate should modify 45Z to ensure that it incentivizes only truly innovative clean fuels, such as synthetic or biogenic sustainable aviation fuel.
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Hydrogen hubs are key to domestic energy production and regional economies across the U.S.
Hydrogen hubs are intended to test, develop, and demonstrate technologies needed to minimize emissions intensity of hydrogen production, and the Regional Clean Hydrogen Hubs program is at a pivotal moment. Despite significant progress, support, and investment in the seven selected hydrogen hubs, there are reports that the Trump administration is…
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The Advanced Clean Trucks rule saves lives, so why is Congress trying to axe it?
Congress and the Executive branch are taking steps to worsen pollution by attacking the Advanced Clean Trucks rule (ACT).
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Aviation could consume almost all available biofuel for decarbonization – maritime shipping needs to broaden its own strategy
A wholesale shift to low carbon intensity energy carriers poses huge quantitative and qualitative challenges for aviation and maritime.
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Beyond carbon dioxide: Aviation needs a multi-pronged strategy to address contrails and reduce climate impacts
By tackling contrails alongside CO₂ emissions, we can make meaningful progress toward reducing aviation’s full climate footprint.
