Avoided methane emissions from out-of-state dairy farms are fueling a burgeoning shadow carbon offsetting scheme within the California LCFS
Although sustainable aviation fuels have faced some stumbling blocks, several measures are available to support SAF scaleup
Argues that in the effort to ramp up production of sustainable aviation fuels, mandating their use is smarter than subsidizing their production.
Assesses the environmental impact of supersonic aircraft in light of U.S. support for alternative jet fuels produced from crops like soybeans.
Will newly introduced language in a European Council agreement weaken the 2035 phase-out and keep combustion engines alive?
Explores whether aviation emissions can be greatly reduced if air traffic returns to its pre-pandemic rapid growth.
Argues that unless alternative aviation fuels are produced using additional and renewable electricity, their use will not necessarily decarbonize aviation and could actually increase aviation’s GHG emissions.
Critiques the Biden Administration’s approach to development of sustainable aviation fuels (SAFs) and suggests an alternative path.
U.S. policymakers can strengthen the hydrogen tax credit in the Build Back Better Act by including an additionality requirement.
With recent, encouraging advancements in EU biofuels policy, maybe it’s time for a whole new vision for U.S. policy.
Certifying that hydrogen and efuels are produced from 100% additional renewable electricity is not as simple as it seems.
A step forward for “green” methanol and its potential to deliver deep GHG reductions in maritime shipping
“Green” methanol can provide deep greenhouse gas reductions, but not all methanol is climate friendly, and marine policies should incorporate full life-cycle accounting of emissions.