"But the study by Brussels-based Transport & Environment, a clean transport campaign group, points out there are simply not enough animals slaughtered each year

"But the study by Brussels-based Transport & Environment, a clean transport campaign group, points out there are simply not enough animals slaughtered each year to meet airlines' growing demand for animal fats. "There's not a never ending supply of animals, or animal fat," said Matt Finch from Transport & Environment. "So if you put on a massive extra demand source from anywhere from aviation, in this case, the industries where fat is currently being used, will have to look for alternatives. And that alternative is palm oil. So aviation indirectly, will be responsible for increasing the amount of palm oil being pulled through the European systems.""