Boeing announces three new aviation biofuel initiatives . In little over a week , Boeing has announced three new developments in its quest to produce sustainable aviation biofuel . The company is working with the U.S. Department of Energy to develop a fuel cell that can be used in commercial aircraft and will also work on developing biofuels for use by military aircraft. In 2012 , air transport produced 689 million tons of carbon dioxide -- 2 % of the global total .
Boeing announces three new aviation biofuel initiatives . The company is working with the U.S. Department of Energy to develop a fuel cell that can be used in commercial aircraft and will also work on developing biofuels for use by military aircraft. In 2012 , air transport produced 689 million tons of carbon dioxide -- 2 % of the global total .