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RMI piloted three methodologies for accounting for aviation contrails in corporate travel, finding that a 'bottom-up' flight-specific approach is significantly more accurate than standard static multipliers. The pilots revealed that roughly 2% of flights cause 80% of contrail impacts, with higher risks during winter and nighttime. The report advocates for data-driven travel policies and alignment with emerging regulations, such as the EU's MRV framework, to reduce the total climate impact of aviation.

This report analyzes 32 Air Service Agreements (ASAs) among COFFIS member states to identify legal pathways for implementing aviation fuel taxes to support climate targets and fuel efficiency.

This executive summary from RMI outlines five practical insights to improve the bankability of Sustainable Aviation Fuel (SAF) projects, focusing on risk-sharing, contract design, and cashflow stability to attract low-cost debt and accelerate the transition to low-carbon aviation.

This briefing note from the International Institute for Sustainable Development outlines the barriers to phasing out fossil fuel subsidies in international aviation and maritime shipping and provides recommendations for taxation and emissions levies to reduce greenhouse gas emissions and create a level playing field across transport modes.

This guide by RMI explains demand aggregation as a strategy to accelerate the decarbonization of heavy industry and transport. By consolidating fragmented demand into larger signals, buyers can reduce first-mover risk, achieve economies of scale, and provide the financial certainty needed for suppliers to invest in low-emissions infrastructure. The document details specific initiatives in aviation, maritime shipping, steel, and cement, highlighting the use of joint procurement and 'book and claim' mechanisms to bridge the 'green premium' gap.

A survey of 23 companies by RMI and the Mission Possible Partnership indicates that airlines and corporate customers are willing to pay a 'green premium' for Sustainable Aviation Fuel (SAF) and SAF certificates (SAFc). The findings suggest that waste-based feedstocks and shorter contract durations are preferred, and that current willingness to pay (WTP) could make certain SAF production pathways, particularly HEFA, financially bankable.

This report provides a technical overview of the climate impact of aircraft contrails and the potential for mitigation through contrail avoidance and rerouting. It emphasizes the need for radical collaboration across the aviation sector to improve atmospheric data, refine prediction models, and integrate contrail management into air traffic operations.

The Rocky Mountain region (Colorado, New Mexico, Utah, and Wyoming) has the infrastructure and feedstocks to support a sustainable aviation fuel (SAF) industry but currently lacks substantial production. This report provides a roadmap to bridge these supply gaps and align with the US SAF Grand Challenge.

This policy brief by RMI examines the potential for the Great Lakes region of the United States to become a globally competitive hub for Sustainable Aviation Fuel (SAF). It analyzes the region's strengths in feedstock availability, existing ethanol infrastructure, and logistics, while identifying a significant gap in coordinated state-level industrial policy to support the SAF value chain.

This briefing by Zero Carbon Analytics analyzes the volume and value of Russian jet fuel imports into Europe, highlighting a significant decline in reliance since the pre-pandemic period and identifying the specific airlines and airports with the highest consumption levels in 2021.

This final report summarizes a research project led by Öko-Institut and the Stockholm Environment Institute regarding the design and implementation of the International Civil Aviation Organization's (ICAO) Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA).

This briefing overview describes a series of events held by the Environmental and Energy Study Institute (EESI) focused on climate mitigation and adaptation within the transportation sector, specifically covering ports, aviation, and public transit.

This discussion paper evaluates the Emission Unit Eligibility Criteria (EUCs) for the International Civil Aviation Organization's (ICAO) Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), proposing refinements to five key quality criteria to ensure environmental integrity.

This research paper by the Stockholm Environment Institute analyzes the first 14 applications from carbon-offsetting programs seeking eligibility under the International Civil Aviation Organization's (ICAO) Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA).

A research paper by the NewClimate Institute estimating the potential supply of carbon offset credits for the International Civil Aviation Organisation's CORSIA scheme from 2013 to 2035.

This Action Brief from RMI argues that the aviation industry requires a new strategy to meet climate goals, as current emissions are exceeding forecasts and existing offsetting schemes are insufficient.

This executive summary report, produced by WWF South Africa in collaboration with IIASA, assesses the current and future potential for sustainable aviation biofuel feedstock production in sub-Saharan Africa. Using a systems analysis approach and RSB sustainability criteria, the study identifies 'REMAIN' land—areas not required for food security or environmental conservation—and evaluates the technical potential of various feedstocks to meet a minimum 60% greenhouse gas (GHG) savings criterion. The report concludes that while significant technical potential exists, it is likely to decrease by 2050 due to population growth, food demand, and climate change.

A statement by Friends of the Earth International criticizing the UN Convention on Biological Diversity's 2017 theme of tourism, arguing that mass tourism causes severe environmental degradation and human rights abuses rather than protecting biodiversity.

A statement by Friends of the Earth International criticizing the UN Convention on biodiversity's promotion of tourism, arguing that mainstream tourism causes severe environmental destruction, human rights abuses, and economic injustice.

This 2010 report by the Stockholm Environment Institute explores pathways for the United Kingdom to achieve a zero-carbon transport system by 2050. It compares a Business-as-usual (BAU) scenario with a Maximum Impact (MI) scenario, quantifying the potential CO2 reductions from spatial planning, fiscal measures, behavioural changes, and technological shifts across road, rail, aviation, and shipping sectors.