A SAF future could be being built on an uncertain foundation

Photo: © Toa555

Tomorrow, in advance of COP28, a B787 will take off from London Heathrow and make what is otherwise a routine journey to New York, on Sustainable Aviation Fuel (SAF) alone.

What the scientists, politicians and media expect to learn about the fuel from their seats in the cabin remains to be seen. A great deal of hope, though, is going into the proof-of-concept; hope the flight’s specific CO2 emissions really can be reduced by 70%; hope there ...