eVTOL - Electric Vertical Takeoff and Landing vehicle; a battery-powered aircraft designed for short urban flights., Composite bodywork - Lightweight materials (e.g., carbon fiber) used in aircraft construction., Fly-by-wire technology - Electronic systems replacing manual controls in aircraft., Sustainable Aviation Fuel (SAF) - Eco-friendly fuels made from renewable sources (e.g., plants, waste)., E-fuel - Synthetic fuel made by combining captured CO2 with hydrogen., Carbon offsetting - Compensating for emissions by funding environmental projects (e.g., tree planting)., CORSIA - UN scheme requiring airlines to offset emissions growth post-2020., Contrail cirrus - Artificial clouds from plane exhaust that trap heat in the atmosphere., Lifecycle carbon intensity - Total emissions from a product’s creation, use, and disposal., Lithium-ion battery - Rechargeable battery type used in electric vehicles and aircraft., Hybrid electric engine - Engine combining fuel combustion with battery power., Specific energy density - Energy stored per unit of battery weight (measured in watt-hours per kg)., Net-zero emissions - Balancing emitted greenhouse gases with removal from the atmosphere., Nitrogen oxides (NOx) - Pollutants from aircraft engines that contribute to air quality issues., Thermoplastics - Recyclable plastics that can be remolded, used in eco-friendly aircraft., Urban air mobility - Transportation system using small aircraft for city travel., Turbogenerator - Compact engine that burns fuel to charge batteries for hybrid planes., Blank-cheque company (SPAC) - A company created to merge with startups, funding projects like eVTOLs., Decarbonisation - Transitioning industries to reduce or eliminate carbon emissions., Certification (FAA) - Approval process ensuring aircraft meet safety/environmental standards.,

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