JetBlue announced in January that it intended to become a carbon-neutral airline. To reduce its net carbon footprint, it would begin purchasing carbon offsets—credits generated by sponsoring activities and investments designed to reduce carbon-dioxide emissions. Its flights originating in San Francisco would use a low-emissions substitute for jet-A refined from a mess of pottage that includes used cooking oil, animal and fish fat, tall-oil pitch (a byproduct of pulping wood), and—get ready—“spent bleaching earth oil.”
Technicalities: Making Aviation Sustainable
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