Neat News 1967 (added 2021-05-20)
Flying with cooking oil

© Raimund Stehmann [GFDL]
In a test of Air France with Airbus, a flight from Paris to Montreal had 16 percent used cooking oil mixed with the standard fuel, kerosene. This way 20 tons of CO2 emissions can be saved per flight.
related: #climate #flight #CO2_reduction