< PrevNext > 48. Royal Dutch Shell The Hague, The Netherlands Share 2015 U.S.-Booked Air Volume: $84 millionConsolidated U.S. TMC: Carlson Wagonlit TravelBTN estimates a significant drop in Royal Dutch Shell’s U.S.-booked air volume in 2015, as lower oil prices led to sharply reduced revenue for the oil and gas giant, which looked to cut costs throughout the year. Shell’s business air travel generated 310,000 metric tons of carbon dioxide equivalent in 2015, down 28 percent from 2014. Shell developed a business intelligence platform that analyzes travelers’ booking behavior in recent years, and it uses the data it generates to persuade travelers and managers to book through designated channels. The company’s revenue dropped from $421.1 billion in 2014 to $265 billion in 2015. Income dropped from $14.9 billion to $1.9 billion. Shell employed 90,000 at the end of 2015, down from 94,000 at the end of 2014. In 2016, it completed the $70 billion acquisition of British multinational oil and gas company BG Group.