In 2010, for example, airlines “saved 2 billion gallons [7,600 million L] of jet fuel worldwide ” and contributed to large reductions in aircraft emissions, says a NASA news release.
Pada 2010 saja, NASA melaporkan bahwa hal itu membuat maskapai penerbangan ’ di seluruh dunia menghemat 7.600 juta liter bahan bakar ’. Gas buang pun jadi berkurang banyak.