What is SAF and How Does it Affect Aviation?

As the aviation industry looks to a net-zero carbon future, much of the focus is on new fuel sources and more efficient aircraft, but how can we reduce emissions of current aircraft that rely on traditional jet fuel?  One such option is Sustainable Aviation Fuel (SAF).  This series of posts will look at how it will impact the aviation industry and its goal of carbon net-zero emissions by 2050, starting with an introductory look at SAF.