Would a frequent flying tax be progressive?
In September 2022, we published a proposal for using a global frequent flying levy (FFL) to cover the estimated abatement cost of commercial aviation. Now we investigate whether this solution is progressive or regressive.
Quick pit stops: A challenge for zero-emission planes?
Analyzes the charging and refueling speeds needed for zero-emission aircraft to match the gate turnaround times of conventional aircraft.
Beyond Europe: Are there ambitious electrification targets across major markets?
A recent string of voluntary electrification targets set by large car manufacturers could be the start of more ambitious global announcements in the future, if major vehicle markets other than Europe set regulations to drive accelerated adoption of zero-emission vehicles.
What to expect when expecting electric airplanes
Assesses the potential of battery-powered aircraft to replace regional, narrowbody, and widebody aircraft.
The tortoise and the hare? The race to decarbonize aviation
Explores whether aviation emissions can be greatly reduced if air traffic returns to its pre-pandemic rapid growth.
The G7 gets serious about decarbonizing road transportation
With everything else going on, you might have missed that the G7 ministers of climate, energy, and environment met in late May in Berlin and issued what is arguably the group’s strongest statement to date. The 39-page communiqué didn’t shy away from difficult questions. The ministers took strong stances on a range of topics bearing […]
Flying on the Grid
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.
What if I told you cruising is worse for the climate than flying?
Vacationers take note: Even the most efficient cruise ships today emit more CO2 per passenger kilometer than a passenger jet.
Place your bets: supersonics, or zero-emission planes?
In the high stakes casino of aircraft development, it’s time for industry and governments to place their bets. Supersonics, or zero-emission planes: which will it be?
Polishing my crystal ball: Airline traffic in 2050
Examines various long-term passenger traffic projections and how they impact aviation decarbonization roadmaps
Decarbonizing bus fleets: How subnational targets can aid in phasing out combustion engines
It’s important to remember that commitments by national governments to shift to zero-emission transit buses have often followed earlier commitments by subnational actors.
One cruise-ship-sized loophole needs to be closed in Vancouver’s proposed scrubber restrictions
A complete ban on scrubber washwater discharges in the Port of Vancouver