[Lee Stewart]

Planes burn a lot of fuel transporting passengers around the world, which is why Qantas airlines, one of the largest carriers in Australia, has been looking for eco-friendly alternatives. One option? A blended fuel that is half conventional fuel and half cooking oil. The end result produces around 60 percent fewer carbon emissions than traditional options. Qantas chief executive Alan Joyce told ABC, "We need to get ready for a future that is not based on traditional jet fuel or, frankly, we don't have a future."