Guest: Marco Oved, climate change reporter. The air travel industry is betting big on sustainable aviation fuels (SAFs) to drastically cut the amount of airplane emissions over the next few decades. It is a solution that will work with existing aircraft, but there are plenty of questions including the supply and the cost. Is the industry latching on to a solution that sounds good in order to avoid some of the really difficult questions? Some believe the only way for the airline industry to really reduce emissions is to radically reduce the number of flights. This episode was produced by Alexis Green, Matthew Hearn and Raju Mudhar.