1. Governments and the public are increasingly aware of the need to limit global warming to 1.5°C and achieve net-zero emissions by 2050 due to reports from the IPCC. 2. There is no single solution to reducing aviation's carbon emissions, and a concerted effort is needed across efficient aircraft/engine technologies, sustainable aviation fuels, and electrification. 3. Sustainable aviation fuels will be vital to reducing the industry's carbon emissions but currently only 0.1% of flights use them; Rolls-Royce is working to increase testing and production of these fuels.