Sustainability & Environment
Aviation's environmental impact and the industry's path toward net-zero emissions.
13 guides in this series
Aviation's Carbon Footprint: How Flying Impacts the Climate
Aviation accounts for roughly 2.5% of global CO2 emissions and up to 4% of total climate forcing when non-CO2 effects are included. This guide explains what the science says and puts aviation's impact in context.
10 min read
Carbon Offsetting for Flights: How Offsets Work and Whether They Help
Carbon offset programs allow travellers to fund emissions reduction projects to compensate for their flight's footprint, but offset quality varies enormously. Understand the mechanisms, certifications, and the case for and against offsetting.
12 min read
Sustainable Aviation Fuel Guide: Types, Availability, and Real-World Cost
SAF is the airline industry's primary near-term decarbonization tool, but it currently costs three to five times more than conventional jet fuel and supply is a fraction of demand. This guide covers what SAF is and what is holding it back.
11 min read
Airline Fleet Renewal: How New Aircraft Cut Emissions by 20–25%
The most reliable near-term path to airline emissions reduction is replacing older aircraft with newer, fuel-efficient types like the Boeing 787, Airbus A350, or narrowbody A320neo and 737 MAX families. This guide quantifies the gains.
11 min read
Aviation Noise Pollution: Community Impact, Regulations, and Quieter Aircraft
Aircraft noise affects millions of people living near airports, driving strict curfews, night flight restrictions, and continuous descent approach mandates. Explore how noise is measured, regulated, and reduced at source.
15 min read
Single-Use Plastics in Aviation: Airline Waste Reduction Initiatives
A single long-haul flight can generate over 250kg of cabin waste, much of it single-use plastics from meal trays, cups, and cutlery. Learn which airlines are leading waste reduction and what regulations are driving change.
9 min read
Electric and Hydrogen Aviation: The Zero-Emission Aircraft Timeline
Battery-electric regional aircraft and hydrogen-powered jets promise zero in-flight emissions, but both technologies face fundamental engineering and infrastructure hurdles that make widespread adoption before 2040 unlikely for most routes.
10 min read
Contrails and Climate: The Non-CO2 Effects of Aviation Explained
Contrails and the cirrus clouds they generate may contribute as much to aviation's climate forcing as all the CO2 the industry has ever emitted. This guide explains the science and the emerging strategies to reduce the impact.
10 min read
Airline Sustainability Reporting: ESG Metrics, Frameworks, and Greenwashing
Airlines face growing pressure from investors and regulators to report credible environmental, social, and governance data. Learn which frameworks are used, what good reporting looks like, and how to spot greenwashing.
9 min read
Airport Carbon Accreditation: ACI Levels and the Road to Net Zero Airports
The ACI Airport Carbon Accreditation programme provides a framework for airports to measure, reduce, and offset their direct emissions across four progressive levels. Learn how the programme works and which airports have reached net zero.
9 min read
Operational Efficiency Gains: Continuous Descent, Single-Engine Taxi, and More
Airlines can cut fuel burn and emissions by several percent through operational improvements like continuous descent approaches, single-engine taxiing, and optimised flight planning — without requiring new aircraft or fuel types.
12 min read
Rail vs Air Emissions: When Trains Beat Planes for the Climate
On routes under 700km, high-speed rail consistently produces a fraction of the emissions of equivalent flights, but the comparison gets more complex on longer distances and in regions with carbon-intensive electricity grids.
10 min read
CORSIA Explained: ICAO's Carbon Offsetting and Reduction Scheme for Aviation
CORSIA is the first global market-based measure for any sector, requiring airlines to offset international emission growth beyond 2019 baseline levels. Learn how the scheme works, who is covered, and whether it is sufficient.
9 min read