Sustainable aviation fuels are a fraud. Study after study say that no matter how you look at the data, their production will fail to meet aviation needs no matter how much money is thrown at the problem. Not only does the industry have to be created from scratch, creating enough "sustainable" fuels to replace jet fuel by 2050 assumes we can convert all of the planet's grasslands to biofuel crops. Worse, they give airlines, aircraft manufacturers and oil & gas companies public relations cover to continue to do incredibly little to tackle their emissions and pollution, while increasing the use of jet fuel as the growth of air travel continues unabated.