Global demand for greener air travel and ever-fluctuating oil prices have inspired several major airlines to invest in alternative fuels. Lufthansa, Ryanair, easy Jet, Japan Airlines, Air New Zealand and Continental are just some of the airlines that are actively pursuing biofuels.

In March, United Airlines began using biofuel to power flights from L.A. to San Francisco, with plans to eventually expand usage to all its flights out of LAX. In a press release about the launch, United’s director of environmental affairs and sustainability, Angela Foster-Rice, commented on the significance of the initiative:

“Today’s historic launch of regularly scheduled service utilizing advanced biofuels represents a major next step in our ongoing commitment to operate sustainably and responsibly.”