Answer: Human sewage
Notes: The innovative jet fuel, recently developed by Firefly Green Fuels, is derived primarily from human sewage. This pioneering approach, led by CEO James Hygate, transforms sewage into kerosene-like fuel. The process is part of a broader effort to reduce the aviation industry's carbon footprint, which is crucial given the industry's significant contribution to global carbon emissions. This development represents a major stride in sustainable aviation, offering a potential 90% reduction in carbon footprint compared to traditional fossil jet fuels.
